Bonded seal kit (metal-rubber) 

We offer ready-to-use bonded seal kits in a convenient organizer box (box) - all sizes are labeled. The sets consist of the most popular washer sizes. A washer set is useful in every workshop, plant, maintenance department - everywhere where we deal with threaded connections requiring a leak-proof seal. Washers are made of the highest quality NBR rubber and galvanized steel. We distinguish metric washers, designed for metric threads, and BSP inch washers - designed for inch threads. We also offer metal-rubber washers sold individually and stainless steel VITON washers.

Washers are divided into those intended for metric threads ( metric washers ) and those intended for British inch BSP threads ( inch washers ) - they differ in dimensions. All the washers we offer can be purchased individually or in multi-packs (originally packed in 100 pcs) 

Application of metal-rubber bonded seals 

Bonded seals (metal-rubber washers) are a special type of seal designed to seal specific thread sizes: for example, an M12 bonded seal is intended for sealing connections for M12x1, M12x1.5, and M12x2 threads. The washer is placed on the external thread and then tightened - the washer has a rubber seal ensuring 100% tightness. Washers are used in hydraulic connections, fittings, bolts, etc. Generally, washers are used to seal threaded connections. We also offer copper washer kits - designed for connections that are exposed to high temperatures. 

Bonded seals, effective connection sealing

Bonded seal kits are a practical and reliable solution for sealing threaded connections in power hydraulics, pneumatics, and oil installations. Combining a metal element with a rubber layer allows for high tightness even under varying pressure and vibrations. A set in one box enables quick selection of the appropriate washer size without downtime, which is particularly important in service centers and workshops.

Bonded seals as a reliable sealing for threaded connections

Bonded seals are commonly used where classic copper washers or O-rings alone may not provide sufficient tightness. The metal part is responsible for the mechanical stability of the connection, while the rubber layer adapts to the contact surface, effectively eliminating micro-leaks. This solution works perfectly for the installation of hydraulic fittings, hydraulic plugs and elements cooperating with hydraulic hoses.

Practical box with metal-rubber seals for the workshop

Bonded seal kits are packed in a solid box with compartments, which facilitates work organization and quick access to the correct size. Such an arrangement allows for maintaining order in the workshop and significantly reduces the time needed for a repair. The box works well both in a stationary workshop and in a mobile service handling hydraulic lines and oil installations.

Bonded seal kits in power hydraulics and pneumatics

In power hydraulics, bonded seal kits are often used for pump, distributor, and actuator connections, where high pressures and vibrations occur. Washers of this type work well with elements such as hydraulic valves, tees, elbows and service connections at high-pressure hoses. In pneumatics, they find application in compressed air installations and auxiliary systems. Bonded seal kits are used in the services of construction, agricultural, and industrial machinery. They are suitable for repairs of hydraulic systems in excavators, loaders, tractors, and production machines. Bonded seals are also often used in the assembly of hydraulic lines, service connectors, and for sealing connections under bolts and drain plugs.

Who are bonded seal kits intended for

Bonded seal kits are intended for professional power hydraulic workshops, maintenance points, and mobile services. This is a good solution for fitters and mechanics who work daily with power hydraulics, pneumatics, hydraulic hoses, and elements requiring a durable and reliable seal.

Why it is worth having a bonded seal kit on hand

Having a bonded seal kit in one box allows for a quick response to leaks and performing repairs without unnecessary delays. Thanks to different sizes of washers, it is possible to match the seal to many types of connections, which increases work efficiency and limits the risk of leaks in hydraulic and oil systems.

Technical parameters

• Product type: bonded seal kits

• Construction: metal + rubber layer

• Standard: metric

• Size range: various inner and outer diameters

• Application: sealing threaded connections

• Purpose: power hydraulics, pneumatics, oil installations

• Packaging: box with compartments

• Installation: under bolts, plugs, and threaded connections

Bonded seal kits are universal workshop equipment that increases the tightness of connections and facilitates daily work in servicing hydraulic and technical systems. 

Bonded seal practical kit always on hand

The washer kit is available in two versions: metric washer kit 150 pcs and a large washer kit 240 pcs ( metric and inch washer kit ) 

• convenient box (organizer) 
• material: NBR + galvanized steel. 
• useful in every workshop 
• highest quality workmanship 
• most popular washer sizes

Sizes of bonded seals 

 bonded seals - metric 

• M6: 6.7 x 10 x 1 mm
• M8: 8.7 x 13 x 1 mm
• M10: 10.7 x 16 x 1.5 mm
• M12: 12.7 x 18 x 1.5 mm
• M14: 14.7 x 22 x 1.5 mm
• M16: 16.7 x 24 x 1.5 mm
• M18: 18.7 x 26 x 1.5 mm
• M20: 20.7 x 28 x 1.5 mm
• M22: 22.7 x 30 x 2 mm
• M24: 24.7 x 32 x 2 mm
• M26: 26.7 x 35 x 2 mm
• M27: 27.2 x 36 x 2 mm
• M30: 31 x 39 x 2 mm
• M33: 33.7 x 42 x 2 mm
• M36: 36.7 x 46 x 2 mm

 bonded seals - inch 

• 1/8": 9.6 x 15.3 x 1.5 mm
• 1/4": 13.2 x 18.8 x 1.5 mm
• 3/8": 17.2 x 23.8 x 1.5 mm
• 1/2": 21.4 x 27.8 x 1.5 mm
• 5/8": 26.6 x 33.8 x 1.5 mm
• 3/4": 31.6 x 39.8 x 1.5 mm
• 7/8": 35.9 x 44.8 x 1.5 mm
• 1": 40.9 x 50.5 x 1.5 mm
• 1 1/4": 50.9 x 61.5 x 2 mm
• 1 1/2": 59.9 x 71.5 x 2 mm
• 2": 75.9 x 88.5 x 2 mm