O-ring Groove Machining

Item	Specification
Inner Diameter (ID)	3.750 in
Outer Diameter (OD)	4.975 in
Surface Roughness	32 μin (imperial)
Corner/Fillet Radius	R 0.015 ±0.010 in
Runout on Common Axis	≤ 0.010 in
Angular Tolerance	±0°30′
Surface Treatments	Anodizing (MIL-A-8625, Type II, Class 1) Chemical Film (MIL-DTL-5541, Type II, Class 1A)

 

The sealing ring features a stepped outer profile with multiple concentric grooves that enhance sealing performance and structural integrity. The inner bore is precisely machined to ensure tight tolerance control and consistent concentricity. A sealing groove on the inner side is designed to accommodate elastomeric rings such as FKM or EPDM, providing reliable sealing under dynamic or static conditions. The combination of rigid metallic support and flexible sealing elements ensures both strength and leak-proof performance.

Depending on application requirements, the sealing ring can be equipped with a variety of high-performance elastomers, including EPDM (EP Rubber 70), Fluorocarbon (FKM), Fluorosilicone (FVMQ), Fluorocarbon 75, and Viton GF. All materials comply with international standards (AMS, MIL, ASTM) to meet demanding conditions such as high temperature, low temperature, and chemical resistance.

These sealing rings are widely applied in aerospace sealing assemblies, energy systems, valve components, and high-performance pumps. With strict dimensional control, premium surface treatments, and multiple sealing material options, the product ensures reliable sealing performance under high pressure, extreme temperatures, and corrosive environments, significantly extending equipment service life and reducing maintenance costs.