Lip seal

Illustrated explanation

Seal construction and moving contact affect the duty

1Lip seal
Seal construction and moving contact affect the dutyCallout 1 shows a flexible lip touching the surface of a rotating shaft. A separate static cable-entry seal illustrates a different contact duty, without transferring either construction’s dimensions, material limits or instructions. Current term: Lip seal, callout 1. 1 Flexible lip and mating surface Lip contact Housing Example: rotating shaft Motion affects friction, heat and wear Different sealing duty Example: static cable-entry contact Use its own compound and instructions A seal-specific temperature caution is not a universal polymer-family limit
  1. Lip sealThis term

    The flexible lip meets its specified mating surface. Relative movement can introduce frictional heat and wear; a rotary shaft lip seal and a static gland insert require their own service limits.

A conceptual shaft lip seal contacts a moving surface. A separate static cable-entry example shows why the compound name alone cannot transfer one seal construction’s temperature and lubrication requirements to another.

Simplified examples of different sealing duties, not a shaft-seal design or cable-gland section for manufacture. Lip support, contact force, lubrication, dimensions and limits belong to the actual seal and product instructions.

ReferencesISO 6194-1:2007 — Rotary shaft lip-type seals — Nominal dimensions and tolerancesIEC 62444:2010 — Cable glands for electrical installations