SEAL OTG

The OTG profile is a radial seal with a rubber-coated metal cage, a primary sealing lip with integrated spring, and additional dust lip and inverted sealing. The sealing lip, with integrated spring, is placed on the outside. It has a grooved on the inside to facilitate assembly.

CHARACTERISTICS

Very good static sealing.
Very good thermal expansion compensation
Greater roughness is allowed in the shaft.
Reduced risk of corrosion.
Sealing for low- and high-viscosity fluids
Modern primary sealing lip with reduced radial forces.
Protection against undesirable air contaminants.
Grooved inner to facilitate assembly.

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

ø	ºC	bar	m/s
15-790 mm	-40ºC + 200ºC	≤ 0.3 bar	≤ 10 m/s

MATERIALS

Elastomer

NBR 70-75 Shore A

FKM 75-80 Shore A

VMQ 70-75 Shore A

ACM 70-75 Shore A

EPDM 70-75 Shore A

HNBR 70-75 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.

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