9900 Bonded Seal Buna-N for BSPP Fittings | British Pipe Parallel Seals
Product Description:
The 9900 Bonded Seal Buna-N for BSPP Fittings collection is designed to provide reliable face sealing for British Standard Pipe Parallel (BSPP) threaded ports. Because BSPP threads do not seal on the threads themselves, bonded seals are required to maintain pressure integrity in hydraulic systems.
These seals combine a carbon steel outer ring with a Buna-N rubber sealing element, creating a robust, pressure-resistant seal that performs reliably in oil, fuel, and water-based hydraulic systems.
Design & Material Overview
Carbon steel outer ring for structural support
Buna-N (Nitrile) elastomer sealing face
Designed to match BSPP 55-degree thread geometry
Prevents extrusion under pressure
Provides consistent sealing without thread sealants
Pressure & Performance Characteristics
Designed for high-pressure hydraulic systems
Maintains seal integrity under vibration
Suitable for pressure cycling environments
Prevents leakage in parallel thread ports
Industries & Use Cases
Industrial hydraulics
Mobile equipment
Agricultural machinery
Construction equipment
International OEM hydraulic assemblies
Applications
Sealing male BSPP fittings
BSPP port sealing in manifolds
BSPP adapters and plugs
The 9900 series is commonly paired with male BSPP fittings, plugs, and adapters used in international hydraulic equipment.
