FEP/PFA Encapsulated O-Rings

FEP / PFA Encapsulated O-ring

An encapsulated O-ring is a rubber O-ring that’s completely covered by a smooth, seamless layer of FEP or PFA. The plastic coating surrounds and protects the rubber core from liquids, chemicals and other surroundings. This gives you the soft, springy sealing action of rubber plus the tough temperature and chemical resistance of FEP/PFA.

Standard elastomer O-rings can react with chemicals or atmospheric gases, causing them to harden or become brittle because they don’t resist solvents and high temperatures well. Encapsulated O-rings stop the elastomer core from touching the media, and their strong FEP/PFA coating makes them suitable for many different applications.

Technical

Benefits of Encapsulated 'O'-Rings and Seals

  • Very tough against strong chemicals and doesn’t let gases pass through easily.

  • Low friction, so equipment parts wear out less.

  • Keeps the stretchy, sealing action of a rubber O-ring.

  • Uses a single, standard material (MOC), so you don’t need different parts for different jobs.

  • Doesn’t get permanently squashed or slowly flow like some solid O-rings do.

  • Can handle heavy cleaning and sterilizing cycles (CIP = clean-in-place, SIP = sterilize-in-place).

  • The surface won’t corrode.

  • Meets common sanitary and safety rules (3-A Sanitary, USP Class VI, FDA 21 CFR 177.1550, BSE/TSE animal-safety, and EU Regulation 1935/2004).

Hardness

  • 85-90 Shore A for solid core Silicone
  • 90-95 Shore A for solid core Viton®
  • 75-80 Shore A for hollow core Silicone


Temperature Range

FEP Encapsulation : -60°C to +205°C (-75°F to +400°F) Short durations to +260°C. (+500°F)

PFA Encapsulation : -60°C to +260°C (-75°F to +500°F) Short durations to +300°C. (+575°F)

Application

Typical Application

  • Pumps and valves
  • Chemical reactor vessels
  • Mechanical seals
  • Cartridge filters
  • Pressure vessels
  • Heat exchangers
  • Autoclaves
  • Cryogenics
  • Hose couplings
  • Pipelines
  • Gas compressors
  • Access covers
  • Reusable syringes
  • High purity water
  • Gas service
  • Cartridges
  • Glass flanges
  • Low pressure, quick disconnect piping system
  • Vacuum service
  • Glass heat exchanger tube/ tube sheet seals
  • Large diameter access covers
  • Relief and emergency valves
  • Mixers and vessels
  • Spray paint
  • Photoelectric work
  • Tank cars and trucks [diffuser in tank]
  • Filter elements
  • Butterfly valves
  • Air operated vents
  • Scientific laboratory
  • Lab reactors
  • Sampling monitors [pesticide and personal impactor]
  • Manways [t bolt hinge closure]
  • Leak free bottles
  • Petroleum mixers
  • Industrial concrete sprayer
  • Stainless steel gas line holders
  • Flowmeter
  • Magnetic vacuum beaker vapors recovery adapters
  • Chimney
  • Bulkhead fitting
  • Turbines
  • Strainers
  • Pressure pots

Target Industry Sector

  • Chemical Process
  • Aircraft and Aerospace
  • Gasoline and Chemical Transport
  • Oil refineries
  • Scientific Glassware instruments
  • Automotive Components
  • Food, Dairy and Beverage, Wine/Beer industry
  • Oil Extraction (on shore and off shore)
  • Photochemical
  • Semi-conductor manufacture
  • Refrigeration Engineering
  • Polymer Production
  • Dye and Paint manufacture
  • Paper and Pulp industry
  • Cosmetics and Perfumery
  • Computer Chip Manufacturing Industry