40-90 Shore cao su độ cứng O và đệm niêm phong trong cao su silicone NBR HNBR EPDM với kích thước chuẩn AS568

Chinese factory supplier provide high quality rubber o rings rubber sealing gasket

Product introduction

Shanghai Qinuo supplies rubber O-rings with a catalogue hardness reference of 40–90 Shore A. Specify the target hardness, tolerance and compound together with inside diameter and cross-section. The range covers alternative grades; it does not mean one O-ring has every hardness or that harder rubber is suitable for every groove.

For oilfield O-ring orders, provide the groove drawing, fluid composition, temperatures and pressure cycling. Specify continuous and peak temperatures, exposure duration and thermal cycling for each selected compound grade. For sour-gas, aggressive-chemical or rapid-decompression service, include the required grade qualification, medium composition and decompression conditions together with the complete equipment pressure limits.

For pump or machinery maintenance, identify the exact sealing position and whether the duty is static or dynamic. Include the process fluid and cleaning agents. NBR may be considered for compatible petroleum service and EPDM for appropriate water-based service, but formulation and temperature limits must be reviewed. Installation in one position does not establish suitability for a rotating shaft or another medium.

40–90 Shore A O-Ring Enquiries: Specify One Target Hardness

State the target Shore A hardness and allowed tolerance for the chosen compound. Keep the equipment groove, sealing motion, fluid and temperatures with the request. Hardness alone does not establish extrusion resistance, pressure capability, compression set or chemical compatibility.

Provide an AS568 dash number or metric inside diameter and cross-section with units and tolerances. O-rings and other gasket profiles require their own drawings. For repeat orders, keep the approved compound and hardness reference with the package rather than identifying a ring only by color or apparent stiffness.

Product photo show

Company and factory introduction

Shanghai Qinuo Industry Co., Ltd supplies rubber seals and replacement parts under Royal Way and SHQN. O-ring enquiries can be discussed from an AS568 dash number, metric dimensions or custom drawing.

Qinuo provides rubber, plastic and machined-part enquiries for industrial applications. For O-rings, agree size tolerances, compound grade and inspection requirements for the equipment position.

Confirm tooling, order quantity, production availability and dispatch with the quotation. Keep each O-ring dimension and compound reference separately identified in the package.

We operate an ISO 9001 quality management system. Agree drawing revision and material and dimensional inspection requirements with the order. Include the approved compound reference, target hardness and tolerance, finished dimensions and service-specific qualification requirements.

How to contact

www.unionseal.com