Bonded Seals (Dowty Washers) BSP - Black

Bonded Seals (Dowty Washers) BSP Box of 100 Pieces. These seals feature a metal construction with ...

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eBayBONDED SEALS (DOWTY WASHERS) BSP AB67N Workshop Warehouse
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Product Information

Full details

This guide is for engineers, mechanics, and DIY enthusiasts working with hydraulic and pneumatic systems. The Workshopwarehouse Bonded Seals (Dowty Washers) BSP in Black offer a reliable, self-centralizing, and leak-free sealing solution for threaded connections. While highly effective, proper installation is crucial to ensure optimal performance.

All features

ColourBlack
Model Part NumberAB67N
BrandWorkshopwarehouse

Extended Product Information

FAQs

What does BSP stand for?

BSP stands for British Standard Pipe, a widely used thread standard for pipes and fittings.

What are Dowty washers used for?

Dowty washers, also known as bonded seals, are primarily used to create a leak-proof seal in hydraulic and pneumatic systems, typically between a fitting and a component's port.

What is the metal part of the seal for?

The metal outer ring prevents the rubber element from being over-compressed during tightening, which ensures the seal's integrity and longevity.

What is the black rubber material?

The black rubber is Nitrile Rubber (NBR), known for its good resistance to oils, hydraulic fluids, and moderate temperatures.

How many sizes are included in the box?

The box contains 100 pieces across 7 different BSP sizes: 1/8", 1/4", 3/8", 1/2", 5/8", 3/4", and 1".

Can these seals be used with water systems?

Yes, Nitrile Rubber (NBR) is generally suitable for water, but always check specific application requirements and fluid compatibility if there are additives or extreme temperatures involved.

What is the approximate weight of the box?

The approximate weight of the box containing 100 pieces is 0.6 kg.

Troubleshooting

Leakage after installation

Verify that the mating surface is clean and smooth. Ensure the seal was correctly seated and the fitting was tightened to the specified torque. Check for damage to the seal or fitting.

Seal appears to be bulging or extruding

This may indicate over-compression. Loosen the fitting slightly and re-tighten to the correct torque specification. Ensure the correct size seal is being used for the fitting.

Difficulty in seating the seal

Check for any burrs or imperfections on the mating surface or the fitting. Ensure the correct seal size is being used.

Pros and Cons

Pros

  • Provides a highly reliable and leak-free seal.
  • Self-centralizing feature aids in quick and accurate installation.
  • Durable construction suitable for demanding applications.
  • Comes in a convenient pack of 100 for value and availability.
  • Suitable for a wide range of BSP threaded connections.

Cons

  • Requires a smooth, clean mating surface for optimal sealing.
  • Nitrile rubber has limitations with certain aggressive chemicals or extreme temperatures.
  • Not designed for high-vibration environments without additional securing measures.

Setup, Compatibility & Care

Setup:

  1. Ensure the threaded port and mating surface are clean, dry, and free from debris, burrs, or damage.
  2. Place the bonded seal over the threaded stud or into the fitting, ensuring the rubber side faces the mating surface.
  3. The seal is self-centralizing; align the fitting and tighten it using appropriate tools.
  4. Tighten to the manufacturer's recommended torque specification for the specific fitting to achieve a secure seal without over-compression.

Compatibility:

  • These seals are designed for BSP (British Standard Pipe) threads.
  • The nitrile rubber (NBR) is compatible with mineral oils, hydraulic fluids (HL, HLP), water, and air. Check chemical compatibility charts for specific fluid types.

Care:

  • Store seals in a cool, dry place away from direct sunlight and ozone sources to prevent premature degradation of the rubber.
  • Avoid exposing seals to temperatures outside the typical range for NBR (approximately -30°C to +100°C).
  • Clean mating surfaces thoroughly before installation. Do not reuse old seals.

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