Kích thước tiêu chuẩn AS568, hệ mét, O-ring cao su NBR, HNBR và bộ kín

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

Product introduction

Shanghai Qinuo supplies rubber O-rings for equipment grooves defined by inside diameter, cross-section, tolerance and compound. The existing range includes NBR, HNBR, FKM, FFKM, EPDM and silicone options. Choose each grade for the actual sealing position and operating medium rather than treating these polymers as interchangeable.

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.

Replacement O-Ring Samples: Confirm New-Part Dimensions Before Ordering

When sending a sample, include the original part number or groove drawing if available. A used ring may be stretched, flattened or swollen, so its measured dimensions should not be treated as the required new-part dimensions. Confirm inside diameter, cross-section, tolerance and compound against the equipment requirement.

For repeat orders, specify an AS568 dash number or metric dimensions with units, then add the compound grade, target Shore A hardness and quantity. The existing 40–90 Shore A catalogue range is not one grade specification. Keep the size and material reference with the package; color does not uniquely identify a compound.

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, hardness tolerance, finished dimensions and service-specific qualification requirements.

How to contact

www.unionseal.com