High quality NBR HNBR FKM FFKM EPDM Silicone rubber o rings
Product introduction
SHQN supplies rubber O-rings for drawing-defined static and suitable dynamic sealing positions in oilfield and pump equipment. Select the inside diameter, cross-section and compound for the groove and operating duty. NBR, HNBR, FKM, FFKM, EPDM and silicone are material options requiring separate grade selection rather than one interchangeable specification.
For oilfield O-ring enquiries, provide the equipment position, groove dimensions, fluid composition, temperatures and pressure cycling. Specify the continuous and peak temperatures, exposure duration and thermal cycling for each selected compound grade. Sour gas, rapid decompression and aggressive chemicals require specific compound qualification; include the required qualification, inspection documents and complete equipment pressure limits with the enquiry.
For pump housings, covers and valve connections, identify the exact sealing position and whether it is static or dynamic. Include the pumped medium, cleaning agents and operating temperatures. NBR may be considered for compatible petroleum fluids and EPDM for suitable water-based service, but the actual formulation must be reviewed. An O-ring should not be assumed suitable for a rotating shaft merely because it is used elsewhere in the pump.
Shanghai Qinuo offers size and color enquiries from an AS568 dash number or metric inside-diameter and cross-section drawing. Keep the compound grade, hardness target and color reference on each order line; color does not identify a rubber family or prove compatibility.
Pump O-Ring Orders: Identify the Groove and Medium on Each Line
List the equipment model and sealing position, AS568 dash number or metric ID × cross-section, drawing tolerance, compound grade and hardness. Include the medium, cleaning chemicals and temperatures. AS568 dash sizes and metric dimensions are separate ways to specify a ring; confirm the exact dimensions rather than describing AS568 as a metric size standard.
For repeated maintenance orders, keep the package label with the compound and size reference. Confirm groove condition and follow the equipment maker’s replacement procedure. A ring selected for one fluid or sealing position is not automatically suitable elsewhere in the pump.
Product photo show
Package and shipping
Company and factory introduction
Shanghai Qinuo Industry Co., Ltd supplies rubber seals and oilfield replacement parts marketed under Royal Way and SHQN. Drawing- and sample-based enquiries can be discussed for the required O-ring size and grade.
Qinuo provides rubber, plastic and machined-part enquiries for industrial applications. For O-rings, agree the dimensions, tolerance, compound and inspection requirements against the intended sealing position.
Confirm tooling, order quantity, production availability and dispatch with the quotation for the specified size and compound. Packing should keep different dimensions and material grades separately identified.
We operate an ISO 9001 quality management system. Agree the drawing revision and dimensional and material inspection criteria with the order. Include the compound reference, hardness tolerance, finished dimensions and service-specific qualification requirements.
How to contact
www.unionseal.com
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