Product Advantages
- Factory direct supply with scalable production - In-house manufacturing supports large-volume orders with stable and timely delivery.
- Standardized fixed compound formulation with batch consistency - Key parameters such as ACN content, curing system, and reinforcement system are controlled to ensure stable batch-to-batch performance.
- Wide operating temperature range: -40°C to +150°C - Suitable for most industrial oil sealing and general engineering applications.
- Tensile strength ≥16 MPa with strong mechanical structure - Provides good resistance to extrusion and deformation under pressure loading.
- Designed for OEM and industrial procurement requirements - Focused on predictable performance and stable supply consistency for mass production systems.
- Complies with ASTM D2000 M4DH716 and ISO 3601 standards - Material specification and dimensional standards are aligned with international engineering requirements.
- Direct replacement for NBR in compatible systems - Service life can be extended by 3–5 times in appropriate operating conditions without modification of existing hardware.
Product Specifications
| Item | Specification |
|---|---|
| Product Name | Standard HNBR O-Ring |
| Material Name | Standard Hydrogenated Nitrile Butadiene Rubber (Standard HNBR) |
| Hardness Range | 50–80 Shore A (standard: 70 ± 5) |
| ACN Content | Approx. 36% |
| Reinforcement System | Carbon black filled |
| Curing System | Peroxide curing (fixed formulation) |
| Tensile Strength | ≥16 MPa |
| Elongation at Break | ≥250% |
| Compression Set (150°C × 70h) | ≤30% |
| Density | Approx. 1.18 g/cm³ |
| Color | Black |
After-Sales Service
| Item | Details |
|---|---|
| Quality Control | Strict quality inspection process; raw material certification; batch traceability available |
| Certifications | Complies with ISO 9001 quality management system; conforms to ASTM D2000 and ISO 3601 standards |
| Shipping Methods | Supports express (DHL/FedEx), air freight, and sea freight options |
| Packaging | Standard export packaging; compact packing to reduce shipping cost; custom labeling available |
| Warranty | Material defect warranty provided |
| After-Sales Service | 24/7 support; fast response for quality-related issues and technical feedback |
Why Choose This Product
1. Performance Comparison: NBR vs HNBR (This Product) vs FKM
- NBR operates up to 120°C with moderate oil resistance, aging resistance, mechanical strength, and extrusion resistance, and has the lowest cost.
- HNBR operates up to 150°C with balanced high performance in oil resistance, aging resistance, mechanical strength, and extrusion resistance, suitable for hydraulic and engine systems.
- FKM operates up to 300°C with the best heat and chemical resistance, but moderate mechanical strength and higher cost.
- HNBR offers better mechanical strength and extrusion resistance than FKM, and covers most hydraulic and engine working conditions with a balanced cost-performance ratio.
2. Material Selection Guide
- Below 120°C oil/water sealing → NBR
- 120–150°C hydraulic and engine systems → HNBR
- Above 200°C high-temperature chemical environments → FKM
- High pressure with extrusion risk → HNBR
3. Consequences of Wrong Selection
- NBR in high temperature → aging, cracking, leakage
- NBR in high pressure → extrusion failure
- FKM in standard systems → unnecessary cost
- Poor media compatibility → swelling and seal failure
4. Positioning of HNBR
- HNBR is hydrogenated from NBR, improving thermal stability up to 150°C and mechanical strength.
- Material cost is around 50–60% of FKM.
- This product uses a fixed formulation with ACN 36% ±1% to ensure batch consistency.
- HNBR is a balanced solution for hydraulic and engine sealing applications requiring stable performance.
FAQ
Q1: What is the difference between Standard HNBR O-Ring and regular HNBR O-Ring?
A: This product is produced with a fixed formulation. Key parameters such as ACN content, curing system, reinforcement system, and processing conditions are locked to ensure consistent batch-to-batch performance.
Regular HNBR O-rings may vary in formulation depending on different suppliers or production batches.
Q2: What does "fixed formulation" mean?
A: ACN content is controlled at 36% ±1%. The curing agents and accelerators are fixed, the carbon black grade and loading are unchanged, and the mixing process parameters are standardized. Any material change requires written customer approval.
Q3: Do you support OEM/branding service?
A: Yes. Customer logos and customized product names can be printed on packaging bags and cartons. MOQ depends on specification and can be confirmed with our sales team.
Q4: How is product traceability managed?
A: Each batch is labeled with a production lot number, which links to raw material records, production parameters, and inspection data, ensuring full traceability throughout the production process.
Q5: How are after-sales issues handled?
A: We provide ongoing technical support. If any quality issue occurs, please share the batch number and photos. We will review and respond within 48 hours and assist with further handling.
