O-Rings

Rubber O-Rings and Silicone O-Rings are a loop of elastomer with a round cross-section intended to be seated in a groove and squeezed together during assembling between two or more parts, creating a seal at the interface to block the passage of liquids or gases. Custom O-Rings selection is based on chemical compatibility, service temperature, sealing pressure, lubrication requirements, and working atmosphere. O-rings can form a static or dynamic seal. A static seal is where the O-ring does not move and is used simply for containing pressure or maintaining a vacuum. Dynamic seals can be reciprocating (like a piston and cylinder), or rotating (shaft rotating in a housing). Axial squeeze and radial squeeze are two methods for applying an O-ring.

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Category: Rubber

Description
Material Selection Guide

Description

KESARIA RUBBER INDUSTRIES stands as one of India’s leading Silicone Oring manufacturers and exporters of Rubber O-Rings, with a production capacity of 550,000 units per day. We provide a diverse selection of elastomeric materials suitable for both special and standard applications, enabling our O-Rings to seal a wide range of liquids and gases. Our expertise includes producing O-Rings from 3 mm to 500 mm in various sizes and colors, using materials such as FKM, Silicone, EPDM, NBR, Neoprene, SBR, and Natural Rubber. The hardness of our O-Rings ranges from 30 to 95 Shore A Durometer. For custom O-Rings, precision in width, thickness, inner diameter, and outer diameter is crucial, and our engineers are available to ensure the specifications meet your needs.

Material Selection Guide

MATERIAL	NR	SBR	NBR	CR	EPDM	HNBR	ACM	CSM	SILICONE	FKM (VITON)
HARDNESS RANGE (SHORE A)	40-90	35-90	40-90	40-80	40-90	40-90	40-80	40-80	30-80	50-90
HIGH TEMP ^oC	100	120	130	130	150	150	180	150	230	225
LOW TEMP ^oC	-50	-55	-45	-40	-50	-45	-25	-40	-60	-15
STEAM	F	F	F	P	G	G	P	E	E	E

E= EXCELLENT; G= GOOD; F= Fair; P= Poor; A=Available, NA= Not Available This guide is intended for general reference Only. The materials listed are the most commonly used. There are numerous compound variations designed for specific applications for which please forward details to our engineers for recommendation.