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APSOseal® O-Rings

For all applications – from one source

  • O-rings overview: red FEP-O-Seal with Angst+Pfister branding, black Kalrez and blue PERTEC o-rings
  • O-rings overview: red FEP-O-Seal with Angst+Pfister branding, black Kalrez and blue PERTEC o-rings

A comprehensive o-ring assortment

For more than 100 years, O-rings have been established as the preferred sealing elements in all branches of industry thanks to their simple geometry and high sealing performance. Angst+Pfister's range of O-rings covers the entire spectrum from high-performance elastomers to materials for standard applications – all at an excellent price-performance ratio. Additionally, Angst+Pfister also offers optimal sealing solutions for highly specific applications. Angst+Pfister is constantly expanding its product range and is thus successfully meeting the continuously increasing demands with regards to media and temperature resistance.

Applications

  • Food and beverage industry
  • Process industry
  • Drinking water
  • Pharma, medical and healthcare
  • Chemical industry
  • General machine industry
  • Oil and gas
 

Product List

Product Description Technical data Approvals Key applications Order
 

                                                       

Material Colour Hardness
(Shore A +/-5) 
Temperature (°C)
(short-term)
3-A Sanitary ACS/CLP ADI free AS/NZS BAM BfR Cognac by BNIC D.M. 06/04/04 n° 174 D.M. 21/03/1973 DVGW EN 681-1 DVGW DIN 682 DVGW W 270 DVGW W 534 DVGW 549 EC 1935/2004 FDA French Arreté GB 4806.11 GMC/RES N°28/99 KIWA for drinking water KTW LFGB MERCOSUR GMC 54/97 NORSOK M710 NSF 51 NSF 61 ÖNORM PAH Category UBA USP WRAS Food & beverage Process industry Drinking water Pharma, medical & healthcare Chemical industry General machine industry Oil & gas  
Kalrez® 0040 Kalrez® 0040 has excellent low temperature properties and a high elasticity. This compound has been specially developed for applications where high chemical resistance at very low temperatures is required.  FFKM black 70 -42 to +220     x                                                         x     x      
Kalrez® 0090 Kalrez® 0090 has excellent mechanical properties with a very high hardness. This compound has been specially developed for off-shore applications to withstand changing pressures and explosive decompression. Kalrez® 0090 is certified according to NORSOK M710. FFKM black

95

-10 to +250     x                                                                   x  
Kalrez® 6221 Kalrez® 6221 specially developed for the food and pharmaceutical industry. Resistance to CIP/SIP media is a feature of this material. Lowest extraction values in all common media of these industries complement the broad chemical resistance. FFKM white 70 -10 to +260 x   x                         x                         x   x x   x x      
Kalrez® 6230 Kalrez® 6230 specially developed for the food and pharmaceutical industries. Resistance to CIP/SIP media is a feature of this material. Lowest extraction values in all common media of these industries complement the broad chemical resistance. FFKM black 75 -10 to +260 x   x                         x                         x   x x   x x      
Kalrez® 6375 Kalrez® 6375 offers excellent performance in contact with a wide range of chemicals and over a wide temperature range. The product is an excellent choice for applications in acids. FFKM black 75 -20 to +275     x                                                         x     x      
Kalrez® 4079 Kalrez® 4079 is a black, soot-filled compound and a reliable sealing material for the chemical industry. This material has been specially developed for high temperature applications.  FFKM black 75 -10 to +316     x                                                         x     x      
Kalrez® 7075 Kalrez® 7075 has excellent mechanical properties and a very low compression set, even at extreme temperatures. This compound was developed especially for the chemical industry, which has to reliably seal highly aggressive media at very high temperatures. FFKM black 75 -10 to +327     x                                                         x     x      
PERTEC® CIP FKM 75.501-04 PERTEC® CIP FKM was developed for use wherever the Cleaning in Place (CIP) or Sterilisation in Place (SIP) process is used. It has a broad resistance to chemicals, cleaning media and also to high temperatures and grease concentration. PERTEC® CIP FKM meets all the necessary regulations for the food, pharmaceutical and medical industries. It is a low-friction compound for dynamic applications. FKM sky blue 75 -15 to +200 x   x     x x   x           x x x x         x x     1   x   x x   x x      
PERTEC® ST FKM 75.501-02 With PERTEC® ST FKM, Angst+Pfister has developed a high-performance elastomer that is characterized by high resistance to steam and hot water. FKM black 75 -15 to +200     x                                                         x       x    
PERTEC® UP FKM 70.501-07 With PERTEC® UP FKM - UP means "Ultrapure" - Angst+Pfister has developed a new high-performance material of the PERTEC® family which is especially suitable for applications where absolute purity of the material is indispensable. It has the most important approvals in the food sector. FKM black 70 -20 to +200 x   x   x x x   x   x     x x x x         x x     1 x       x x x x x x    
PERTEC® UP VMQ 70.501-01 With PERTEC® UP VMQ - UP means "Ultrapure" - Angst+Pfister has developed a new high-performance material of the PERTEC® family which is especially suitable for applications where absolute purity of the material is indispensable.. It has the most important approvals in the food sector. VMQ trans-lucent 70 -60 to +200 x   x           x         x x x x x x x x x   x     1   x   x x x x x x    
EPDM 60.10-04 Peroxide cross-linked slightly softer EPDM material with approvals for drinking water. EPDM black 60 -40 to +130   x x             x   x       x                 x     x   x x x x x   x    
EPDM 70.10-02 This EPDM material with many approvals for drinking water and foodstuffs has good media resistance to brake fluids, acids and alkalis, the flame-retardant hydraulic fluids HFC and HFD as well as hot water and steam - but is not resistant to mineral oils and greases, petrol and hydrocarbons. EPDM black 70 -55 to +150 x   x           x     x   x x x   x x         x             x x x x   x    
EPDM 70.502-03 This EPDM material with many approvals for drinking water and foodstuffs has good media resistance to brake fluids, acids and alkalis, the flame-retardant hydraulic fluids HFC and HFD as well as hot water and steam - but is not resistant to mineral oils and greases, petrol and hydrocarbons. EPDM black 75 -51 to +150 x   x     x x   x           x x   x       x   x         x   x x x x   x    
FKM 70-501-05 FKM material for low temperature applications with very good resistance to media, ozone and ageing. FKM black 70 -30 to +200     x                                                         x     x x    
FKM 75-16.04 FK material with a very good resistance to media, ozone and ageing. The connection is specially designed for food, gas and pharmaceutical applications. The material is also resistant to fuels, mineral oils and greases as well as aliphatic and aromatic hydrocarbons. FKM black 70 -25 to +200     x   x x     x         x x x   x                     x   x x   x x x    
FKM 75-16.18 FKM material for high temperature applications with very good resistance to media, ozone and ageing. FKM black 75 -25 to +250
(275)
    x                                                               x x    
FKM 85-501.01 FKM material for low temperature applications and high pressures with very good resistance to media, ozone and ageing. FKM black 85 -40 to +200     x                                                                 x x  
FKM 90-15.04 FKM material designed for oil and gas applications, meeting NORSOK M710 approval (explosive decompression) and NACE TMO 187 for sour gas. FKM black 90 -50 to +225
(250)
    x                                                                 x x  
FVMQ 70.16-01 Fluorosilicone material with excellent low temperature properties and broad chemical resistance. Meets automotive standard R110(5D-5F-5G)R67(15 par11-13-14) and military MIL-DTL-25988C Class I Type II Grade 70 11-08-06. FVMQ blue 70 -60 to +200     x                                                             x x x    
HNBR 70-10.09 HNBR material with good ozone and ageing resistance as well as against hot water and various oils. This mixture has the required gas approvals. HNBR yellow 70 -30 to +150     x               x   x                                             x x  
HNBR 70-15.06 HNBR material for low temperature applications with good ozone and ageing resistance as well as hot water and various oils.  HNBR green 70 -45 to +150     x                                                                 x x  
HNBR 70-502.03 HNBR material for low temperature applications with good ozone and ageing resistance as well as against hot water and various oils.  HNBR black 70 -40 to +150     x                                                                 x x  
NBR 60-10.01 NBR material with good resistance to mineral oils and greases, water and glycols, which is suitable for gas applications. NBR black 60 -30 to +125     x                     x                                           x x  
NBR 70-10.02 High-quality NBR material with approvals in the food and beverage industry and is also suitable for gas applications. This NBR material also has a high resistance to mineral oils and greases, water and glycols. NBR black 70 -20 to +125   x x         x x     x   x x x   x             x                          
NBR 70-502.02 Low temperature NBR material with good resistance to mineral oils and greases, water and glycols. NBR black 70 -50 to +100     x                                                       x x       x x  
NBR 90-10.03 NBR material with good resistance to mineral oils and greases, water and glycols, which is suitable for high pressure applications. NBR black 90 -30 to +100     x                                                                 x x  
VMQ 60-501-01 Silicone elastomer with good mechanical properties over a wide temperature range.  VMQ black 60 -50 to +200     x                                                       x x x     x x  
VMQ 70-10.01 Silicone elastomer with good mechanical properties over a wide temperature range. This compound is resistant in hot air and ozone, in water, in animal and vegetable oils and fats.  VMQ red-brown 70 -55 to +200
(230)
    x                           x                           x x x     x x  
VMQ 80-501.01 Platinum crosslinked silicone elastomer with good mechanical properties over a wide temperature range.  VMQ trans-parent 80 -50 to +200     x                                                       x         x    


Kalrez® is a DuPont™ brand. DuPont™, the DuPont Oval Logo, and all trademarks and service marks denoted with ™ or ® are owned by affiliates of DuPont de Nemours, Inc. 

O-rings made of high-performance materials

O-rings from our high-performance range meet the highest demands of sealing performance and are characterised by exceptional chemical and thermal resistance. 

 

Kalrez® perfluoro elastomers (FFKM)

Where conventional materials fail, Kalrez® perfluoro elastomers (FFKM) represent the most cost-effective and reliable solution in the long-term with regards to total cost. They have a unique application behaviour not matched by any other elastomer material! Kalrez® synthetic rubber in the various compounds combines the elasticity and sealing force of a genuine elastomer with the chemical resistance of PTFE. 

Kalrez® O-rings are resistant to almost all chemicals and can be used at temperatures of +350°C for short periods or +327°C in continuous operation. They are also available with FDA or USP VI approvals. As an authorized distributor of DuPont Performance Polymers, Angst+Pfister has a wide range of Kalrez® O-rings and has direct access to special dimensions. 

Kalrez® O-rings (FFKM) are mainly used in the process industry, pharmaceutical industry, chemical industry, semiconductor technology and in the oil and gas industry.

Kalrez® is a DuPont™ brand. DuPont™, the DuPont Oval Logo, and all trademarks and service marks denoted with ™ or ® are owned by affiliates of DuPont de Nemours, Inc. 

PERTEC® – O-rings made of high-performance elastomers

Our PERTEC® O-rings are made from high-performance materials suitable for specific, particularly challenging industries and shine with properties such as high media resistance and numerous approvals.

The demands on high-performance materials for applications in various industries are becoming increasingly challenging. While the vacuum industry requires materials with low permeability and very good abrasion resistance, and the drilling oil industry high tensile strength and hardness, in the electronics industry low metal ion release is essential.

Our PERTEC® O-rings are also perfectly suited for use in CIP systems (Cleaning in Place) and SIP systems (Sterilization in Place), where a very high level of hygiene is essential for the application, as well as in the food, pharmaceutical, medical and chemical industries. 

Materials of the PERTEC® family are characterized by an above-average performance in terms of friction behavior, are extremely resistant to chemicals and steam, and have many approvals for almost all core industries. In order to stay competitive, we continuously adapt the product range to the latest technologies and challenges.

 

FEP-O-SEAL® O-rings

The FEP-O-SEAL® seals ideally combine the elastic characteristics of elastomer O-rings and the chemical resistance of FEP or PFA. FEP-O-SEAL® O-rings consist of two components: a seamless covering of FEP or PFA (1) and an elastomer core (2) that guarantees dimensional stability. 

There are numerous applications where the use of traditional elastomers causes failure. Aggressive chemicals or extreme temperatures can destroy conventional elastomer O-rings which can ultimately lead to leakage. FEP-O-SEAL® O-rings are therefore used in a wide variety of applications in many industry sectors, but in particular, where ordinary elastomers fail due to these aggressive fluids, like the chemical industry, petrochemical industry, foodstuffs industry, pharmaceuticals, mechanical seals and filtration industries.

FEP-O-SEAL® O-rings are pressure resistant and guarantee a deep compression set with much lower cold flow compared to PTFE. 

For static sealing points, such as flange connections in chemical apparatus engineering, non-elastic PTFE O-rings are the first choice when it comes to universal, robust sealing against aggressive liquids. Media with temperatures from -270 to +980°C and at pressures of high vacuum up to 6800 bar can only be sealed perfectly with metal seals (O-rings and C-rings) – if necessary, with coating.

Our FEP encapsulated O-rings are available from stock with a core of VMQ or FKM. Further possibilities are available with a hollow core in the case of the elastomer and a spiral spring for extreme low temperatures.

 

HITEC® Precision O-rings

The HITEC® brand stands for O-rings that meet very high standards or fulfil approval and conformity requirements in the drinking water, pharmaceutical, food and gas sectors. HITEC® O-rings are only manufactured in one defined factory and all materials have a clearly defined formulation. 

 

NORMATEC® O-rings  

The NORMATEC® O-ring range comprises O-rings of good industrial quality that meet standard requirements. As quality sealing elements, NORMATEC® O-rings are specially designed for high-volume applications: An efficient network of modern and rationally producing manufacturers in Europe and Asia results in a very good price/performance ratio. Depending on the quality and required dimensions, several manufacturers are approved to produce NORMATEC® O-rings according to Angst+Pfister's product specifications.

 

Precision O-rings

Special procurements or modifications based on the various qualities of the standard range open up the possibility of offering individual, project-related solutions with precision O-rings: Angst+Pfister has access to a large mould tool park that allows us to deliver even unusual dimensions on time. If required, Angst+Pfister will procure special materials or materials developed specifically for the customer. 

Surface finishes serve to facilitate assembly or enable the (partially) dynamic use of O-rings that are generally used statically. To reduce friction or improve separation, surface coatings or treatments can be considered. In addition, O-rings can be coated with PTFE in all colours for clear identification of the materials during assembly. 

 

Other special O-rings:

• End vulcanized round cord rings – available in any dimension at short notice
• XL O-rings – in large dimensions with a very high-quality standard regarding surface finish and tolerances
• X-rings – four-lip seal as an alternative to O-rings
• Back-up rings – prevent the O-ring from entering the sealing gap

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