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Vee Packing Set, 4.00 Inch OD, 3.50 Inch ID, 0.75 Inch Height

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Description & Features

Rated for pressure ranges up to 10,000 PSI depending on configuration, this Vee Packing Set, 4.00 Inch OD, 3.50 Inch ID, 0.75 Inch Height is suited for hydraulic cylinder and rod sealing applications across a wide range of industrial equipment. The set combines fabric-reinforced rubber and urethane vee rings with nylon top and bottom adaptors, providing a multi-component sealing assembly in a single matched set.

The stacked vee ring configuration allows pressure capacity to scale with the number of rings used, from 3,000 PSI with four vees up to 10,000 PSI with six vees. A temperature range of -65°F to 220°F supports use in varied environmental conditions. The order code structure identifies the quantity of each component type within the set, making it straightforward to confirm the correct configuration before ordering. This set carries catalog number C1DS21 from Hercules Sealing Products.

SKU: VS35004X075

Supplier Part Number (MPN): VS35004X075

Alternate Part Numbers: C1DS21

Specifications

Code TUFB
1121
Brand
Hercules Sealing Products
Brand
Hercules Sealing Products
Pack Size
1.00
UOM
EA
Height
0.75
I.D.
3.5 in
O.D.
4 in
Supplier Part Number
VS35004X075
Alternate Part Numbers
Alternate Part Number C1DS21
Product Weight
0.23 lbs

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Product Questions & Answers (2)

Question by: Lee E on May 9, 2025, 9:54 PM
Reckon this packing set will hold up in a hydraulic system pushing close to 5000 PSI?
Answer by: Customer Support on May 11, 2025, 1:49 PM
For systems around that pressure, you'll want to use a configuration with five vee rings. That'll give you the sealing force you need.
Question by: Dwayne H on Oct 25, 2025, 7:30 AM
Got a cylinder gland that takes 3.50 ID by 4.00 OD packing, is this set the right size and height or am i off?
Answer by: Customer Support on Oct 26, 2025, 3:45 PM
Fit comes down to the dimensions on the set. This one is 3.50 inch ID, 4.00 inch OD, and 0.75 inch overall height, so it matches a gland that calls for those exact numbers.