Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
HSPBS Series Bellows Mechanical Seals
High - Performance Sealing Solutions Meeting API682 and JB8723 Standards
The HISCIEN HSPBS Series Bellows Mechanical Seals stand out as high-performance sealing solutions, complying with API682 and JB8723 standards. They offer versatile configurations including single/double - end face sealing, cartridge/non - cartridge setups, and balanced - type designs. Capable of withstanding pressures up to 6.9 MPa (double - layer), linear speeds ≤50 m/s, and temperatures ranging from -75 to 425 °C, these seals are well - suited for diverse media like hydrocarbons, thermosetting, and high - viscosity high - temperature substances. Delivering reliable sealing performance, broad adaptability, and durable operation, they ensure efficient and leak - free functioning in a wide array of industrial applications, enabling users to swiftly and confidently make optimal purchasing decisions.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
1. Product Advantages
Compliant & Leak-Proof: Meets API 682 and JB 8723 standards, achieving near-zero leakage (<1 drop/hour). Single-end face for clean media (water, light oil); double-end face for toxic/flammable/high-pressure media (crude oil, solvents).
Wide Adaptability: Handles 0–2.0 MPa (single-layer) / 0–6.9 MPa (double-layer) pressure, ≤25/50 m/s linear speed, and -75°C to 425°C temperature—suitable for harsh conditions like cryogenic LNG or high-temperature petrochemical processes.
Flexible Configurations: Balanced/unbalanced designs (balanced extends life by 40%), cartridge (pre-assembled, 50% faster install)/non-cartridge, plus stationary (606:15–50mm shaft; 604:10–30mm) and rotating (609:20–60mm) variants.
Durable Materials: Sealing faces (SiC/WC), bellows (Hastelloy C-276 for corrosion/Inconel 718 for high temp), auxiliary seals (Viton®/EPDM/Kalrez®)—deliver 2,500+ operating hours (double budget seals).
2. Working Principle
The bellows (connected to the stationary ring) maintains tight contact between the rotating (shaft-mounted) and stationary (housing-mounted) sealing faces. It flexes axially to compensate for wear/shaft misalignment, eliminating leakage gaps. Auxiliary seals block media from entering internal components; double-end face models use buffer fluid for extra protection.
3. Product Details
Certification: ISO 9001/14001, 100% pressure testing (1.2x max pressure) and laser inspection (±0.005mm tolerance).
Key Specs: Shaft diameter 8–150mm; media-compatible with hydrocarbons, chemicals, high-viscosity fluids, cryogens, food-grade liquids.
Material Options: Sealing faces (SiC-SiC/WC-SiC); bellows (Hastelloy/Inconel); auxiliary seals (Viton®:up to 200°C/EPDM:down to -40°C/Kalrez®:up to 327°C).
4. Application Range
Petrochemical: Crude oil pumps, catalytic cracking units.
Oil & Gas: Offshore pumps, LNG terminals, wellhead injectors.
Chemical: Acid/alkali reactors, pharmaceutical mixers.
Power: Boiler feedwater pumps, cooling water systems.
Food & Beverage: Edible oil/dairy pumps (FDA 21 CFR Part 177 compliant).
5. FAQ
Q1: Single vs double-end face?
A1: Single for non-hazardous/clean media (≤2.0MPa); double for toxic/high-pressure/zero-leak needs.
Q2: Abrasive media use?
A2: Yes—abrasion-resistant variant (DLC-coated faces, particle exclusion ring) for slurries/wastewater.
Q3: Maintenance?
A3: Inspect leakage quarterly; replace O-rings annually (cartridge); check alignment/clean bellows every 6 months (non-cartridge).
Q4: Custom sizes?
A4: Shaft diameters 8–150mm; 10–14 business days for tailored seals (API 682 compliant).
Q5: Warranty?
A5: 12-month standard, 18-month with proper install/maintenance—free replacement for defects.
6. Company Selling Points (Forever Seals)
15+ years expertise, 15+ patents in bellows seal design.
Global facilities (China/Germany/U.S.) & 12 warehouses: 2–3 days delivery (standard) /5–7 days (custom) in key markets.
24/7 support from 50+ certified engineers; free pre-installation audits and post-sales troubleshooting.
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