Weisheng Sealing Transparent Rubber O Ring Silicone O-ring Nbr Epdm Neoprene Fkm

Typical rubber o-ring and application

rubber o-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a round cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.

The rubber o-ring may be used in static applications or in dynamic applications where there is relative motion between the parts and the rubber o-ring. Dynamic examples include rotating pump shafts and hydraulic cylinder pistons. 

Static applications of rubber o-ring may include fluid or gas sealing applications in which: 

The O-ring is compressed resulting in zero clearance.

The O-ring material is vulcanized solid such that it is impermeable to the fluid or gas. 

The O-ring material is resistant to degradation by the fluid or gas.

Rubber o-ring are one of the most common seals used in machine design because they are inexpensive, easy to make, reliable and have simple mounting requirements. They have been tested to seal up to 5000 psi (35 megapascals) of pressure.The maximum recommended pressure of an O-ring seal depends on the seal hardness and gland clearance.

Butadiene rubber (BR)
Butyl rubber (IIR)
Chlorosulfonated polyethylene (CSM)
Epichlorohydrin rubber(ECH, ECO)
Ethylene propylene diene monomer (EPDM): 
Ethylene propylene rubber (EPR)
Fluoroelastomer (FKM): 
Nitrile rubber (NBR, HNBR, HSN, Buna-N)
Perfluoroelastomer (FFKM)
Polyacrylate rubber (ACM)
Polychloroprene (neoprene) (CR)
Polyisoprene (IR)
Polysulfide rubber (PSR)
Polytetrafluoroethylene (PTFE)
Sanifluor (FEPM)
Silicone rubber (SiR):
Styrene-butadiene rubber (SBR)

Chemical Compatibility:
Air, 200 - 300 °F – Silicone
Beer - EPDM
Chlorine Water – Viton (FKM)
Gasoline – Buna-N or Viton (FKM)
Hydraulic Oil (Petroleum Base, Industrial) – Buna-N
Hydraulic Oils (Synthetic Base) – Viton
Water – EPDM
Motor Oils – Buna-N

NBR rubber seals pneumatic seal PDR

Regarding the shipment of seal rings, we can check the cheapest freight in China to your country, we can also delivery the goods to your designated forwarder.

Q1: How to know our goods quality?
Free samples of standard sizes seals rings are available , but you need to pay for the freight of the seal ring samples.

For custom spare parts,we can offer 1~5samples after receiving 30% advance payment of the orders or the mould cost.

Only the sample has been approved,we will start the mass production of the spare parts.

Q2: What is the delivery time?
Delivery time depends on the stock and the types and quantity of the order.

If the seal rings are in stock,delivery time will be 1~3 workdays,the stock is changing every day.

If no stock, normally need about 7~25workdays.For standard PU seals, delivery time need about 12workdays.

For standard sizes of o rings,delivery time need about 15workdays.For standard rubber oil seals,delivery time need about 5~12workdays.For custom parts,delivery time need about 12~30workdays.

Q3: How can I get your complete quotation?
Please send us your inquiry with detail size of the products by email, we will offer you our offer sheet and order information within one working day.

Q4: Can we have our logo or company name to be printed on your products or the package?
Yes, your logo and company name can be printed on our products and packing, 

Q5: Can you help to gathering the goods from other suppliers?
Yes, we can offer the best service for our customer,including gathering the goods from other suppliers.