Key Features & Advantages

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1. Precision Geometry: Match the lip profile and installed dimensions to the mating groove and original equipment drawing.

2. Anti-Extrusion Design: Brass or stainless steel reinforcement may be specified where required by the original seal construction. Confirm its dimensions, retention method and position.

3. Chemical Compatibility: Review the selected compound against fluid composition, concentration and exposure conditions.

4. Replacement Fit: Confirm the figure, manufacturer and groove rather than assuming that visually similar seals are interchangeable.

5. Compound Hardness: Specify the agreed Shore A grade for the elastomer and verify it against the service and groove requirements.

    

Application Environments

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Typical replacement applications include:

• Hydraulic Fracturing: Replacement sealing in approved flowline connections, with inspection for abrasive wear.

• Well Testing: Seal replacement for the actual fluid, pressure cycle and equipment configuration.

• Acidizing and Cementing: Select compounds for the chemical formulation and slurry exposure.

• Manifold Systems: Identify each fitting separately when ordering replacement seals for mixed figure numbers.

   

Size Chart & Compatibility

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The existing range lists nominal pipe sizes 1, 1-1/2, 2, 3 and 4 inches. These labels are not the measured seal dimensions; confirm the corresponding profile and groove.

• 1", 1-1/2", 2", 3", 4"

• Standard Service: Fig 100, 200, 206, 211, 400, 602, 1002.

• Listed Figure References: Fig 1502, 2002 and 2202. Confirm the equipment service designation; the figure alone does not establish sour-service suitability.

   

FAQ: Critical Selection Guide & Troubleshooting

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1. How do I choose between NBR and HNBR for my hammer union?

Compare NBR and HNBR grades using the service fluid, temperature cycle and mechanical duty. A general material name does not establish an operating limit or H2S qualification. Specify the compound on the order.

2. Why do my seals fail prematurely through "extrusion"?

Extrusion can relate to clearance, component wear, compound properties and loading. Inspect the groove and mating surfaces after depressurization. Use the original reinforcement configuration where specified; adding a ring cannot correct damaged metal parts.

3. Are your seals compatible with H2S (Sour Gas) service?

Provide the H2S content, other gases, pressure, temperature and decompression conditions for material review. Specify the required compound qualification and equipment acceptance criteria for the actual sour-service conditions.

4. What is the shelf life of these rubber seals?

Follow the supplied compound storage and inspection requirements. Keep seals protected from sunlight, ozone and contamination, record manufacture and batch dates, and inspect before use. Confirm the applicable shelf-life limit for the supplied grade.

5. Can I use your seals in cold weather environments?

Provide the minimum operating and installation temperatures for cold-service selection. Confirm low-temperature performance for the specified compound and assembly rather than relying on a generic NBR or HNBR range.

6. Do you support custom sizing or OEM branding?

Absolutely. As a direct manufacturer, we can produce seals based on your specific drawings or samples. We also offer private labeling and custom packaging for distributors.

Why Partner With Us?

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• Factory Direct Pricing: No middlemen, ensuring competitive rates for bulk orders.

• Quality Assurance: ISO 9001 quality management supports manufacturing control. Agree the compound, dimensional checks and required inspection documents for the order.

• Delivery: Confirm availability and lead time for the selected figure, size, compound and reinforcement.

• Technical Support: Our engineers can help you select the exact elastomer for your specific well-site conditions.

   

Company and factory

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Established in 2013 within the Shanghai Free Trade Zone, Qinuo is a high-tech enterprise specializing in rubber seal manufacturing for the Oil & Gas sector. We integrate R&D, production, and sales under our core philosophy: "Quality for Survival, Innovation for Development." This commitment has earned us recognition across global markets, where we currently promote our Royal Way and SHQN brands in the energy industry.

Qinuo provides professional design and production services for rubber parts, plastic components, and machined parts. Our solutions serve diverse sectors including oil & gas, automotive, home appliances, and industrial equipment. Guided by our principles of "High Quality, High Professionalism, High Efficiency," our dedicated team ensures excellence at every stage.

We operate two wholly-owned factories in Nantong City—strategically located just one hour from Shanghai Pudong Airport and Shanghai Port. Equipped with over 30 rubber vulcanization presses and supporting machinery, we produce more than 20 types of rubber seals and related products. Our monthly production capacity exceeds 20 tons (approximately 40,000 lbs), and we continue to expand rapidly.

Operating under a comprehensive ISO9001-based quality management system, we export to over 100 countries including the USA, Canada, UK, Germany, Finland, and Australia. We're confident in our ability to meet your requirements and look forward to a productive partnership.