Custom PFA/PTFE Rubber Sealing O Ring Encapsulated O-Ring

• Material: Silicone/FKM+ FEP/Fpa
• Application: Automobile Industry, Medical, Chemical, Water
• Type: Shaft Seal
• Performance: High Pressure
• Shape: O-Ring
• Standard: Standard, Nonstandard
• Model NO.: FEP Oring
• Cross-Section(C/S): 1.78mm - 42mm
• Inner Diameter (ID): 8mm~
• Certification: ISO, SGS, RoHS, Reach
• Temperature: -60~ +350 Degree
• Transport Package: PP Bag + Carton
• Specification: Standard/OEM/ODM
• Trademark: SWKS SEAL
• Origin: Tianjin
• HS Code: 4016931000
• Production Capacity: 1000000/Month

Product Description

Product Description

Description

FEP is a thermoplastic material with properties similar to PTFE. O-rings which are seamlessly coated with FEP have an elastic core made from FPM or VMQ and are used if very high thermal or chemical loads are present. The high chemical resistance of the coating protects the core against damage by the potentially aggressive medium.
FEP coated O-rings are used - similar to PTFE-rings - where the chemical resistance of the normal elastomer O-ring is no longer sufficient, but where a certain elasticity is needed. The elasticity is ensured by the inner ring and the chemical resistance is achieved by the seamless FEP coating.

Applications

FEP coated O-rings are perfectly suited for the chemical and petrochemical sector, medical technology, food sector, water and waste water technology and similar industrial applications. A typical application for FEP coated O-rings is the sealing of valve stems and as a secondary sealing element for slow switching and rotary movements.

Properties

• Very good chemical resistance against most liquids and chemicals
• Temperature range from approx. -60 °C to 200 °C [depending on inner ring material]
• No contamination of food, pharmaceutical or medical products
• Physiologically harmless, can be sterilised
• Sufficient elastic behaviour
• FEP O-rings can be replaced with standard O-ring seals without limitation
• No changes to the groove dimensions are necessary
• The O-rings are less flexible than elastomer O-rings due to the FEP coating. They can only be stretched minimally and have a lower elasticity or a higher permanent deformation

FEP-encapsulated O-Rings (Fluorinated Ethylene Propylene):

• Outstanding chemical and corrosion resistance

• Low coefficient of friction

• Resilience with choice of elastomeric cores

• Low compression set

• Temperature range: -75°F to 400°F (-60°C to 205°C)

• Unlimited sizes (No tooling charges)

• Solid & hollow silicone, FKM cores

• Food Grade - non toxic materials available

PFA-encapsulated O-Rings (Perfluoroalkoxy). Same as FEP above but with these added benefits:

• High temperature applications to 500°F (260°C)

• Higher mechanical strength

• Better flex-life

• Low vapor permeation

• Excellent stress and crack resistance

• Longer wearability

• Solid silicone & FKM core

 

Rubber O Rings Information
Material	Hardness (Shore A)	Temperature	Size
			Standard	Available
NBR (Nitrile, Buna) FKM (FPM) EPDM VMQ (Silicone) HNBR FFKM	60-90 70-90 60-90 10-70 60-90 70-90	-40ºC - 110ºC -20ºC - 220ºC -45ºC - 150ºC -55ºC - 204ºC -48ºC - 180ºC -18ºC - 326ºC	AS-568 (USA) JIS-B2401 (Japan) DIN-3771 (Germany) BS-1516 (UK) ISO3601 (International) R (France)	ID≤2000mm C/S≤40mm
Resistance	Color	Certificate	Application
Engine Oil Hydraulic Fluid Chemical Ozone Steam & Hot Water Low Temperature High Temperature	Black Brown Green Red White Blue Color as request	ISO9001 RoHS REACH Food Grade Cert SGS	Automotive Industry Construction Machinery Machine Tool Equipment Water Treatment Chemical Processing Hydraulic Pneumatic Industrial Manufacturing

 

Company Profile

FAQ

1. Q: What is your main product range?
A: SWKS is professional in designing, developing and manufacturing rubber products. For example, o rings, oil seals, piston and rod seals, rubber shock absorbers and custom rubber products.

2. Q: What kinds of rubber materials are available?
A: NBR, FKM, VMQ, EPDM, CR, SR, PU... other rubber compounds can be with your request.

3. Q: What shall be provided before a offer?
A: The materials and dimensions are needed before a offer. If the product is nonstandard, the drawing or sample shall be
provided.

4. Q: What's your payment terms and delivery date?
A: T/T, L/C, Western Union, Paypal,etc. Normally, delivery date is 7-25days according to the order.

5. Q: Which shipping method will be used for a delivery?
A: DHL, FedEx, TNT, UPS, EMS ... By seal or by air are also available.

6. Q: How to packing the goods?
A: All goods will be well packed into pp bags and outer cartons. Special packing can be available with customers' request.