Black NBR 90 ShoreA Parbak Backup Rings AS568 Series 8-216 for Hydraulic Systems -35°C to 100°C Temperature Range
Parbak backup rings are engineered for heavy hydraulic mechanical applications, providing reliable sealing performance in demanding industrial environments.
| Product Name | Backup Ring |
|---|---|
| Material | NBR90 (Nitrile Rubber) |
| Color | Black |
| Hardness | 90 Shore A |
| Temperature Range | -35°C to 100°C |
| Compatible Media | Hydraulic oil, fire retardant liquid, water, gas |
| Applications | Hydraulic cylinder piston, hydraulic valve systems |
| Package | 100 pieces per plastic bag |
| Certifications | ROHS, SGS, ISO-9001:2015 |
- Excellent friction resistance and high operational efficiency
- Superior high pressure resistance capabilities
- Easy installation and maintenance
- Smooth operation performance
- Space-saving compact design
Available materials: NR, NBR, HNBR, FKM, FFKM, EPDM, CR, VMQ, PU, PTFE, PEEK, POM, and more
All manufacturing processes comply with ISO-9001:2015 system and pass ROHS/SGS certification
Excellent chemical and physical properties including chemical resistance, oil resistance, temperature resistance, and wear resistance
Complete custom design and manufacturing services based on customer requirements and specifications
Available in various sizes and multiple color options to meet specific application requirements
- OEM and ODM services available
- Production according to customer drawings or samples
- Competitive pricing with high quality standards
- Best delivery times and customer service
- 100% inspection before shipment
- Comprehensive installation guidance
- 24-hour response time for inquiries
Material selection depends on the operating environment including medium compatibility, temperature range, pressure conditions, and other application-specific factors.
Small orders: Express delivery via DHL, FEDEX, UPS, TNT. Large orders: Air or sea freight options available.
Yes, we specialize in hydraulic and pneumatic sealing products with ISO 9001:2015 certification and REACH/RoHS compliant materials. Customization and OEM production available.
Yes, we provide free samples but customers are responsible for freight costs.
All manufacturing follows ISO-9001:2015 standards with 100% inspection before shipment to ensure product reliability.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.