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H-Seal (Metal Seal)
Custom Metal Fabrication

Bostec's revolutionary H-Seal are the most reliable, flexible and cost effective metal seals in existence. H-Seal™ provide an ultra high vacuum (UHV) seal that is particle free, impermeable to moisture and are interchangeable with elastomeric O-rings. Learn more about H-Seal ...

Guaranteed 100% reliable
Interchangeable with Elastomeric O-Rings
Cryogenic to 500+° C
Sizes from 0.300" to 14"
Available in Nickel, Aluminum, Copper


All Seals Incorporated
The Sealing Specialists
2110 S. Yale Street
Santa Ana, CA 92704
Phone: (714) 556-4931
Fax: (714) 557-3257

SEALS › Hydraulic Seals


Large Diameter Seals/V-Rings - Click to download V-ring Catalog

The V-Ring Seal is an all-rubber seal that seats directly on the shaft and seals axially against a counterface, housing, seal case or similar surface.

Designed with a long flexible lip, the seal acts like an axial slinger. It can retain heavy lubricants and is highly effective in excluding contaminants. The V-Ring can be used as the primary seal or as a secondary back-up seal.

Because it is all rubber and very elastic, it can be stretched over flanges or other assemblies for positioning without any unit disassembly. The V-Ring performs well in dry applications and is capable of handling a greater amount of eccentricity and misalignment than most radial lip type seals. Axial movement should however not exceed the axial sealing range of the lip. Each V-Ring can be used for a range of different shaft sizes.

In certain applications, V-Rings can handle up to 10 psi on the body side only. V-Rings should not be used on shafts mounted below sump level.

For greater fluid and heat resistance, LongLife V-Rings are available. They can be readily identified by a purple dot marked on the seal or by use of brown seal material.

The V-Ring Comes In Five Styles
VR1 - The most common style. Available in the widest range of sizes, from .110" to 79.530" (2.79 mm to 2020 mm) shafts. Nitrile and fluoroelastomer materials. Ideal for conveyor rollers and appliances.
VR2 - The original V-Ring, designed with a wide body and tapered heel to firmly hold the ring on the shaft. Available in all sizes from .180" to 8.270" (4.57 mm to 210 mm) shafts. Commonly used in automotive and agricultural applications.
VR3 - Very narrow axial cross-section used in pillow-blocks to replace labyrinth seals. Available for shaft sizes from 4.134" to 24.800" (105 mm to 630 mm).
VR4 - The heavy-duty large diameter style commonly used in rolling mills as a dirt/water excluder seal. Available for shaft sizes from 11.811" to 79.134" (300 mm to 2010 mm). Can be stretched up to 2 1/2 times its diameter. Note: VR4 is not available in Long Life (FKM).
VR5 - This heavy-duty large diameter style can easily be fitted with a standard clamping band for axial fixation in high speed applications. Ideal for steel mills, ball mills and paper mills. Available for shaft sizes from 11.811" to 79.134". (Approx. 300 mm to 2010 mm).

Note: V-Ring Types VR1, VR3, VR4 and VR5 for shaft sizes larger than 78.740 (2000 mm) are made to special order. The seal profile remains unchanged.


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