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Pump motor in a stainless steel process plant
Simriz · A Freudenberg Sealing Technologies brand

Simriz® FFKM Sealing Solutions for Extreme Conditions

Perfluoroelastomer (FFKM) O-rings and seals for aggressive chemicals, high and low temperatures and high-purity service. We help you find the right Simriz material for your application.

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What Simriz Provides

Simriz is Freudenberg Sealing Technologies' family of FFKM perfluoroelastomer compounds. Simriz compounds approach PTFE chemical resistance while resisting temperatures up to 325 °C.

You don't need to choose a compound. Send us your operating conditions and we'll review the material with the manufacturer. Lead times: in-stock items ship in 2 weeks or less; out-of-stock items in 5 to 6 weeks. Expedite options are available.

  • Broad chemical resistance, including strong acids, strong bases and amines
  • Low-temperature service to -30 °C (-22 °F) with Simriz 481
  • FDA, USP Class VI and 3-A compliant material for sanitary service
  • Specialized compounds for semiconductor and aerospace service

Product Families

Simriz 495 and 481

Chemical Process FFKM

FFKM materials for aggressive chemical service in pumps, valves, mechanical seals and mixers.

  • Simriz 495: very good chemical resistance, including amines
  • Simriz 495: -15 °C to +230 °C, short term to +260 °C
  • Simriz 481: low-temperature performance to -30 °C (-22 °F)
  • Resistance to strong acids and strong bases
Simriz 495 chemical industry sheet (PDF)
Simriz 484

Food, Beverage & Pharmaceutical FFKM

FFKM for sanitary processing, CIP/SIP media, steam and high temperatures.

  • FDA compliant and USP Class VI compliant
  • Meets 3-A Sanitary Standards; ADI free
  • -20 °C to +230 °C (-4 °F to +446 °F)
  • For CIP/SIP equipment, pumps, valves, mechanical seals and mixers
Simriz 484 food and beverage sheet (PDF)
Simriz 486CP

Semiconductor FFKM

White, high-purity FFKM developed for semiconductor plasma and deposition processes.

  • Excellent plasma resistance and minimum particulation
  • High purity to reduce contamination risk
  • Post-process cleaning and packaging as standard
  • For CVD, PVD, plasma etching and ashing, chamber lid and window seals
Simriz 486CP semiconductor sheet (PDF)
Simriz 501 and Z7257

Aerospace FFKM

High-temperature FFKM for aerospace engine, turbine and bleed air systems.

  • Simriz 501 is formulated to far exceed AMS7257 requirements
  • Resists MIL-PRF-23699 HTS turbine lubricants, strong acids, steam and water
  • Resists splitting at high squeeze under high temperatures
  • Produced in NADCAP certified production, with extensive flight testing
Simriz 501 and Z7257 aerospace sheet (PDF)

Find a Solution by Application

Applications documented for Simriz products.

Industries Served

Food & Beverage

Simriz 484 FFKM for CIP/SIP equipment and sanitary pumps, valves, mechanical seals and mixers.

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Chemical

FFKM seals for aggressive chemical service in pumps, valves, mechanical seals, mixers and vacuum parts.

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Pharmaceutical

Simriz 484 FFKM for pharmaceutical process sealing in sanitary, CIP/SIP and steam service.

View industry

Featured Products

Chemical Process FFKM

Simriz 481

Low-temperature FFKM to -30 °C (-22 °F) for pumps, valves, mechanical seals, vacuum components and mixers.

Literature
Chemical Process FFKM

Simriz 495

Chemical-industry FFKM resistant to amines, acids and bases. -15 °C to +230 °C, short term to +260 °C.

Literature
Food, Beverage & Pharmaceutical FFKM

Simriz 484

FDA, USP Class VI and 3-A compliant FFKM for CIP/SIP equipment, pumps, valves and mixers.

Literature
Semiconductor FFKM

Simriz 486CP

Plasma-resistant, low-particulation white FFKM with post-process cleaning and packaging as standard.

Literature
Aerospace FFKM

Simriz 501

Next-generation aerospace FFKM formulated to far exceed AMS7257. Simriz Z7257 remains available.

Literature

Technical Resources

Application help

Find the Simriz material for your application

Tell us the equipment, O-ring size or AS568 dash number, quantity, process media and concentration, temperature, pressure and seal motion. Photos, drawings and existing part numbers help. You don't need to choose a compound. If you don't know an answer, mark it unknown.

O-ring size or AS568 dash numberProcess media and concentrationNormal and maximum temperatureNormal and maximum pressureSeal motionSpecial requirements (FDA, 3-A, USP Class VI, aerospace, RGD)Current seal material and reason for replacement
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Adaptive Industrial Solutions
1015 Grupp Road #31733
St. Louis, MO 63131
877.818.5009
sales@adaptiveind.com
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