Fabric Reinforced V Packing Seal for High Pressure Hydraulic Cylinder

I still remember the first time I saw a hydraulic cylinder fail on a steel
plant line. The rod looked clean. The parts looked fine. But the fabric-
reinforced V-packing set had worn out. That got me thinking—this isn’t a weak
seal, it’s just stressed beyond limits.

Why Fabric Reinforced V-Packings?

Here’s the deal: you have high-pressure, frequent reciprocating motion,
sometimes dirty hydraulic oil. Standard V-ring or O-ring won’t cut it. That’s
when fabric-reinforced V-packing sets, with canvas backing and rubber lip,
makes sense.

At DEDE, we offer exactly that. Most importantly, we’ve based our designs on
real failure modes. You pick material (like canvas + NBR, or canvas + FKM), and
adjust ring count based on pressure. Works up to 40 MPa reliably.

Real Use Cases We’ve Seen

· Mining rigs—harsh dirt and high load cycles. Our canvas stack cut
replacement from once per month to quarterly.

· Metaller hydraulic cylinders—vibration from presses. Complaints dropped
after switch.

· Oilfield pumps—pressure spikes. PEEK/PTFE reinforced stacks gave seal life
from weeks to half a year.

The Stack Structure Matters, let me break it down: Top is male adapter, then
3–7 V-rings (fabric-reinforced rubber), bottom is female adapter. When
pressure mounts, the female adapter pushes down. Each ring expands outward.
Sealing happens progressively. First ring takes most stress. Leaks reduce as it
passes through next ring.

If you need tighter seal, add another ring. Too much friction? Remove one.
It’s field-adjustable. Perfect for maintenance teams.

We offer multiple compounds:

· Canvas + NBR — good for mineral hydraulic oil, standard systems.

· Canvas + FKM — chemical resistant, ideal where oil contains additives.

Choice depends on fluid, stroke speed, temperature, alignment. We help match it
all through technical review.

Why Use DEDE is Approach

· Immediate shipping on stock of over 10,000 seal specs (V-packing, O-ring,
oil seal).

· Custom design service—from sketches to prototype, match your exact cylinder
size.

· Engineering knowledge—we evaluate your pressure, stroke, fluid, even rod
surface finish.

· Manufacturing expertise—we’re a recognized High-Tech Enterprise,
Innovation Center, and specialize in sealing OEM.

We ship to more than 80 countries. Our clients include OEMs in construction
machinery, oil/gas, metallurgy, mining, rail traction, robotics.

If your equipment suffers from leakage, short seal life, or frequent
maintenance—especially under high pressure or cyclic load—try a fabric-
reinforced stack instead of a molded ring.

Reach out to the DEDE engineering team. Share your cylinder bore, rod size, oil
type, and we’ll help configure a V-packing stack. Adjust ring count, material
compound, compression—everything can be fine-tuned.

We don’t just sell seals. We solve the problem that seal failure refuses to
leave behind.

Minimum Order: 500 pieces

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