Product Overview

The Junchi (SANMON) High Temperature O-Ring Seal Kit is a comprehensive maintenance solution containing an assortment of premium O-ring seals specifically selected for oilfield equipment applications. Each kit includes multiple sizes of O-rings manufactured from high-performance fluoroelastomer (FKM/Viton) and hydrogenated nitrile (HNBR) compounds, providing reliable sealing performance across a wide range of temperatures, pressures, and chemical environments encountered in drilling, production, and wellhead equipment.

The FKM O-rings offer exceptional chemical resistance and temperature capability up to 230 deg C (446 deg F), making them ideal for high-temperature, aggressive fluid environments. The HNBR O-rings provide excellent mechanical properties and resistance to H2S and corrosion inhibitors, suitable for sour service applications up to 165 deg C (329 deg F). All O-rings are manufactured to precise dimensional tolerances per AS568 and ISO 3601 standards, and each batch undergoes compression set testing, hardness verification, and dimensional inspection in our Tianjin facility.

Technical Specifications

Applications

• Wellhead Equipment: Seal replacement for Casing Heads, Tubing heads, casing spools, and adapter flanges in onshore and offshore wellhead assemblies.

• Blowout Preventers (BOP): O-ring seals for ram BOPs, annular BOPs, bonnet seals, and hydraulic operating systems.

• Valves & Chokes: Static and dynamic sealing elements for Gate Valves, ball valves, check valves, and adjustable chokes.

• Downhole Tools: Seal elements for packers, bridge plugs, float equipment, liner hangers, and other completion tools.

• Pumps & Compressors: Shaft seals, housing seals, and piston seals for Mud Pumps, injection pumps, and gas compressors.

Advantages

• Premium Material Selection: Only genuine FKM (Viton-grade) and HNBR compounds are used, ensuring reliable sealing performance and long service life in demanding oilfield conditions.

• High Temperature Capability: FKM O-rings maintain elasticity and sealing force at continuous temperatures up to 230 deg C, far exceeding standard NBR O-ring limitations.

• Chemical Resistance: Outstanding resistance to H2S, CO2, amine-based corrosion inhibitors, methanol, diesel, and most drilling fluid additives.

• Explosive Decompression Resistant: Special FKM formulations meet NORSOK M-710 requirements for rapid gas decompression (RGD/ED) resistance, critical for high-pressure gas applications.

• Precision Dimensional Control: Every O-ring is manufactured to AS568/ISO 3601 tolerances (+/- 0.13mm typical), ensuring consistent installation and reliable gland fill.

• Convenient Kit Format: Pre-packaged kits containing commonly needed sizes reduce downtime during equipment maintenance and ensure correct seal selection.

• Batch Traceability: Every kit is batch-coded for complete material traceability back to raw rubber compound and manufacturing date.

Why Choose SANMON

SANMON has established itself as a reliable supplier of oilfield sealing solutions through our commitment to quality materials, precision manufacturing, and comprehensive customer support. Our Tianjin facility maintains a state-of-the-art sealing products division equipped with computer-controlled rubber compression molding presses, continuous curing ovens for post-cure processing, and precision measurement instruments including optical comparators and laser micrometers for dimensional verification. Every batch of O-rings undergoes physical property testing including Shore A hardness, tensile strength, elongation at break, and compression set per ASTM D2000 standards. We maintain extensive inventory of standard sizes in both FKM and HNBR for immediate shipment, and can manufacture custom sizes and compounds for specialized applications. Our sealing experts provide complimentary material selection guidance, installation recommendations, and compatibility testing for specific fluid environments. With competitive pricing, fast delivery, and a commitment to quality that meets international oilfield standards, Junchi/SANMON is your trusted partner for sealing solutions.

FAQ

Q: Should I choose FKM or HNBR for my application?
A: FKM (Viton) is recommended for high-temperature applications (above 150 deg C), aggressive chemical exposure, and when explosive decompression resistance is required. HNBR is ideal for moderate temperatures with H2S exposure and where superior mechanical properties (tear/abrasion resistance) are needed.

Q: What sizes are included in a standard kit?
A: Standard kits are available in metric (ISO) and imperial (AS568) sizing. Custom kits containing specific sizes for your equipment can be assembled upon request.

Q: Do you offer O-rings in other materials?
A: Yes, we also supply O-rings in NBR, EPDM, FFKM (Kalrez-grade), silicone, and PTFE-encapsulated configurations. Contact us for specific material requirements.

Q: Can you supply O-rings for API 6A wellhead equipment?
A: Yes, our FKM and HNBR O-rings meet the requirements of API 6A for wellhead and Christmas tree equipment sealing.

Q: What is the shelf life of the O-rings?
A: When stored properly in cool, dry conditions away from UV light, FKM O-rings have a shelf life of 10+ years, and HNBR O-rings have a shelf life of 5-7 years per ARP5316 guidelines.