Skip to content
SEALGUARD
SERIES 07 / 0805 product lines

Hydraulic Seals

Rod and piston seals — U-cups, V-packing sets, wipers, step seals and back-up rings — engineered for the pressure and stroke of hydraulic cylinders.

Request a QuoteFind Your Seal
Hydraulic rod and piston seals including U-cups, step seals, wipers and back-up rings
Hydraulic Seals
Reciprocating seals for cylindersSERIES 07 / 08
Capabilities

Performance envelope

Hydraulic cylinders live or die by their seal package, and SealGuard supplies every element of it. Single-acting U-cups and PTFE step seals deliver low-friction, stick-slip-free rod and piston sealing; chevron V-packing sets stack up for the highest pressures; wipers scrape contamination off the rod before it reaches the seal; and anti-extrusion back-up rings hold everything in place at the top of the pressure range. Specified together, they keep cylinders tight, smooth and reliable through millions of cycles.

Operating LimitsHydraulic Seals
Temperatureθ · °C
-60°C to +200°C (PTFE)
PressureP · bar
Up to 700 bar (back-up rings)
Size RangeDN · ⌀
Rod / bore Ø8–500 mm · metric & inch · ISO 5597 / 6195 / 7425
MaterialsMAT
Polyurethane, NBR, fabric-reinforced PTFE, PA / POM back-ups
Product Range05 LINES

Hydraulic Seals lines

Browse the hydraulic seals range, compare the headline limits, and add candidates straight to your quote request.

Polyurethane U-cup hydraulic rod seal showing the U-section sealing lipsSingle-acting rod & piston seal

U-Cups

A self-energising U-section seal whose flexible lips are pressure-actuated for low-friction single-acting rod and piston sealing.

Temp
-30°C to +110°C (PU) / +200°C (PTFE)
Pressure
Up to 400 bar (with back-up ring)
Specs
Chevron V-ring packing set with male and female adaptersStacked chevron packing set

V-Rings

Adjustable V-section (chevron) packing sets that stack to seal very high pressures on hydraulic rods and reciprocating plungers.

Temp
-30°C to +200°C (PTFE rings)
Pressure
Up to 700 bar (stacked set)
Specs
Polyurethane rod wiper scraper at the gland mouth of a hydraulic cylinderRod scraper for contaminant exclusion

Wipers

Rod wipers and scrapers that clear dirt, dust and moisture from the rod on the return stroke to protect the seal and hydraulic fluid.

Temp
-30°C to +110°C (PU)
Pressure
Up to 5 bar (back-pressure, exclusion device)
Specs
PTFE step seal with its elastomer O-ring energiserPTFE slipper for stick-slip-free motion

Step Seals

A PTFE slipper-seal energised by an elastomer O-ring, delivering ultra-low-friction, stick-slip-free rod and piston sealing.

Temp
-30°C to +200°C
Pressure
Up to 400 bar (with back-up)
Specs
PTFE and polyamide back-up rings in solid, spiral and split stylesAnti-extrusion support ring

Back-up Rings

PTFE and polyamide back-up rings that support O-rings and seals against extrusion at high pressure and large clearance gaps.

Temp
-60°C to +200°C (PTFE) / +250°C (PEEK)
Pressure
Up to 700 bar (supporting O-ring)
Specs
Specification Guidance

Getting the spec right

Field-tested guidance from our engineers on specifying hydraulic seals for demanding service.

  • Note 01

    Pair every rod seal with a wiper to keep ingress off the seal and out of the hydraulic fluid.

  • Note 02

    Add anti-extrusion back-up rings once system pressure and the extrusion gap exceed the seal's bare rating.

  • Note 03

    Choose PTFE step seals for high-cycle, low-friction service where stick-slip would mar position control.

  • Note 04

    Stack V-packing sets for very high pressures and adjust gland depth to set the working compression.

Let’s specify it

Engineer out your next leak.

Send us your service conditions — media, temperature, pressure and motion — and our engineers will specify the seal that holds the line.

Request a QuoteFind Your Seal