Alternative sealing solutions

Aluminum Triple Labyrinth (ATL)

Machined aluminum bodied triple labyrinth seal for high speed and general applications. Supplied as standard in USA and Canada.

Temperature limits: -4°F to +212°F; -20°C to +100°C
Maximum speed: Bearing maximum
Shaft surface finish: 3.3 µm Raa.

High Temperature Packing (HTP)

A PTFE filament yarn impregnated with graphite and lubricated with silicon. A direct replacement for felt in high temperature applications. Also available silicon free.

Temperature limits: -94°F to +500°F; -70°C to +260°C
Maximum speed: 6000dN; 150000mm dN
Shaft surface finish: 0.8 µm Ra.

Triple labyrinth with Viton rubber cord insert (TL HT)

Suitable for high speed and high temperature applications.

Temperature limits: -4°F to +347°F; -20°C to +175°C
Maximum speed: Bearing maximum
Shaft surface finish: 3.2 µm Ra.

Single lip with spring loaded retaining plate (SRS RP)

Suitable for severe splash or completely submerged applications. Two grades available, one operates in up to 2meters of fluid or up to 30 meters.

Temperature limits: -4°F to +212°F; -20°C to +100°C
Maximum speed: 6000dN; 150000mm dN
Shaft surface finish: 0.4 µm Ra.

Labyrinth grease groove (LAB)

Standard seal for bearings over 300mm. Particularly successful on marine applications. Suitable for low or high speed operation.

Temperature limits: As bearing
Maximum speed: As bearing
Shaft surface finish: 3.2 µm Ra.

Synthetic nitrile rubber single lip (SRS)*

For wet but not submerged applications. Can be used to retain bearing lubricant by mounting lip innermost.
* High and low temperature versions also available.

Temperature limits: -4°F to +212°F; -20°C to +100°C
Maximum speed: 6000dN; 150000mm dN
Shaft surface finish: 0.8µm Ra.

Felt (F)

Made from wool and selected fibers. Felt is the current UK and European standard seal.

Temperature limits: -94°F to +212°F; -70°C to +100°C
Maximum speed: 6000dN; 150000mm dN
Shaft surface finish: 1.6 µm Ra.

Neoprene rubber triple labyrinth (NTL)

For applications with a maximum speed of 3300rpm for shaft diameters up to 65mm, 2000rpm for shafts from 70mm to 90mm and 1800rpm for shafts up to 105mm. Can be used where an explosive or corrosive atmosphere prevents the use of aluminum.

Temperature limits: -4°F to +212°F; -20°C to +100°C
Maximum speed: 6000dN; 150000mm dN
Shaft surface finish: 3.2 µm Ra.