HNBR O-Ring 90 Shore A Abrasion Resistant H2S Resistant Seal for Drilling Tools

HNBR O-Ring 90 Shore A Abrasion Resistant Seal for Drilling Tools

This HNBR 90 Shore A O-ring listing focuses on abrasion-related replacement requirements in drilling tools. Identify the installed ring by its inner diameter and cross-section, then review grooves, cuts or extrusion on the removed seal. Provide drilling-fluid additives, solids content and operating conditions to select the compound and assess the gland fit.

Features

• Nominal 90 Shore A HNBR, with abrasion requirements specified for the application
• Sour-service qualification specified and reviewed for the selected compound
• Inspection of removed seals helps distinguish abrasive wear from cutting or extrusion
• Better ozone and weather aging than standard nitrile
• Review extrusion clearance and backup-ring requirements for the gland

Applications
Mud-pump and fluid-end seal replacement, and other drilling-tool applications requiring HNBR O-rings. MWD/LWD, downhole, wellhead or pressure-control use requires the equipment-specific drawing, service requirements and applicable qualification.

FAQ

Q: Why HNBR 90 instead of NBR for drilling tools?
A: Compare the specified compound properties with the mud chemistry, temperature and wear requirement. HNBR and NBR grades should be selected from compound-specific data rather than polymer names alone.

Q: Is it rated for H2S and sour service?
A: The HNBR name and hardness do not establish sour-service qualification. Specify gas composition, pressure, temperature, decompression conditions and required qualification tests for compound review.

Q: How does it stand up to abrasion?
A: Send photographs of the worn ring and gland, together with solids concentration and service conditions. Review the compound and installation geometry against the specified wear requirement; hardness alone does not define abrasion performance.

Q: When would I pick FKM over HNBR?
A: Compare the specific HNBR and FKM compounds against fluid chemistry, temperature range, mechanical loading and the required tests. Provide the equipment material specification where available.

Q: What sizes and options are available?
A: Send an AS568 dash number or metric inner diameter and cross-section. Include quantity, hardness tolerance, drawing and any material or inspection requirements for a quotation.