SEAL DG4

The DG4 profile is a special seal for shock absorbers composed of a single rubber-coated metal cage and a double sealing lip suitable for linear movements, with the fluids separated by the integrated springs. It has a grooved outer casing to facilitate assembly.

CHARACTERISTICS

Very good static sealing.
Very good thermal expansion compensation
Greater roughness is allowed in the casing.
Reduced risk of corrosion.
Sealing for low- and high-viscosity fluids
Modern sealing lips with low radial forces.
Sealing lips designed for linear movements.
Fluid separation system.

See our Installation guide for oil seals to perform a correct installation of the seal.

ø	ºC	bar	m/s
15-100 mm	-30ºC / 100ºC	≤ 6.5 bar	≤ 1,5 m/s

MATERIALS

Elastomer

NBR 80-90 Shore A

HNBR 80-90 Shore A

XNBR 80-90 Shore A

Metal casing

AISI 1060-90 - AISI 304 - AISI 316

Spring

AISI 1060-90 - AISI 302 - AISI 304 - AISI 316

TOLERANCES FOR THE OUTSIDE DIAMETER OF THE OIL SEAL

Housing diameter	Metal cage	Elastomeric coating	Housing with grooves
≤50.0	+0.10 / +0.20	+0.15 / +0.30	+0.20 / +0.40
<50.0 ≤80.0	+0.13 / +0.23	+0.20 / +0.35	+0.25 / +0.45
<80.0 ≤120.0	+0.15 / +0.25	+0.20 / +0.35	+0.25 / +0.45
<120.0 ≤180.0	+0.18 / +0.28	+0.25 / +0.45	+0.30 / +0.55
<180.0 ≤300.0	+0.20 / +0.30	+0.25 / +0.45	+0.30 / +0.55
<300.0≤500.0	+0.23 / +0.35	+0.30 / +0.55	+0.35 / +0.65
<500.0 ≤630.0	+0.23 / +0.35	+0.35 / +0.65	+0.40 / +0.75

TOLERANCE FOR THE INNER DIAMETER OF THE SEAL

The inner diameter of the sealing lip is always smaller than the shaft diameter. Depending on the shaft size, the sealing lip diameter is generally between 0.8 and 3.5 mm smaller than the shaft diameter.

Can we help you?

Our team will help you find the best solution and choose the optimal profile and material for your application.