Silicone and Nitrile Sealing Rings — Replacement Measurements and Compound Selection

When replacing a silicone or nitrile sealing ring, identify the profile before measuring it. A circular-section O-ring is ordered by inner diameter and cross-section; a square-section ring needs section width and height, while a flat gasket needs its outline and thickness. Measure an unused sample where possible and compare it with the mating groove drawing, because a used seal may have stretched, swollen or taken compression set.

For a replacement inquiry, include the original part number, dimensional tolerances, hardness and contacted fluid. Review silicone (VMQ) and nitrile (NBR) compounds against operating temperature, cleaning chemicals and exposure duration. Food-contact service requires the applicable regulation and compound documentation. A matching ring diameter alone does not confirm interchangeability, chemical compatibility or food-contact compliance.

Product Photos

Silicone O RING

NBR /HNBR/ EPDM /FKM O RING

Product Description

	Replacement dimensions: O-ring ID * cross-section in mm; provide groove dimensions and tolerances. For square rings or flat gaskets, send a profile drawing.
	Material:NBR,HNBR,FKM,EPDM,Silicone And Ect.
	OEM/ODM replacement inquiries: send part number, sample or drawing, material and hardness requirements, color reference and quantity; custom packing can be reviewed.

Other Shape

Material 

FEPM, FFKM and CR (chloroprene) are separate material families; identify the required grade rather than treating them as equivalents.

Acrylate Rubber(ACM)                      Nitrile Rubber (Buna-N/NBR) 

Ethylene-propylene (EPR,EPDM)     Polyurethane(PU)

Fluorocarbon (FKM/FPM)                 Silicone Rubber(VMQ)

Fluorosilicone(FVMQ)                    Styrene-butadiene Rubber (SBR)

Hydrogenated Nitrile (HNBR)           Polytetrafluoroethylene(PTFE)

Package

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Company Profile

Delivery

FAQ

Q: Can I get some samples?
A: Certainly, samples are available. We offer 1-5 samples or 1 pack of samples for free. Please note that shipping

    costs are not included. Alternatively, we can arrange shipping using your courier account.

Q: What is the shipping time of samples?
A: Usually 3-5 Day.

Q: Can I custom product and print my logo on the product or packaging?
A: Yes, we offer customization services. For details, please contact us.

Q: Can you manage the shipment of products?
A: Absolutely, we can arrange different shipping methods based on the final packaging of the goods, including

    express, air, or sea shipping.

Q: Can you send the goods to an Amazon warehouse?
A: Certainly, just provide us with the exact address, and we will arrange the shipment accordingly.

Q: What payment methods do you accept?
A: We accept PayPal, Western Union, TT (bank transfer) and credit card; confirm the payment method in your quotation.

Q: What is the lead time?
A: For stock goods, the lead time is generally within 15 days, depending on the quantity. For custom orders, production takes approximately 12-15 days, depending on the packaging and quantity.