Timken455200Inch Rotary Shaft Oil Seal – 4-1/2 in Shaft, 5.506 in OD, 0.562 in Width, Nitrile

Product Description

What this part is

Timken 455200 inch rotary shaft oil seal, National 450000 series. Shaft Size: 4.5 in (114.3 mm). Outer Diameter: 5.506 in (139.852 mm). Overall Width: 0.562 in (14.275 mm). Housing Bore: 5.5 in (139.7 mm). Seal Type: 45. Material: Nitrile. Redicoat: Yes. Design Units: Inch. GTIN: 053893489322.

Decoding the designation

455200 — Timken National oil seal number in the 450000 inch series.

Type 45 — single sealing lip loaded by a garter spring, carried on a metal outer case.

Redicoat — a bore-sealing coating applied to the metal outside diameter, which seals the press fit against seepage through the housing bore.

What these specs mean in practice

The nitrile lip runs directly on a 4.5 in ground shaft and the garter spring holds the lip load constant as the elastomer relaxes and wears. Nitrile suits petroleum oils and greases and general-purpose industrial service. The 0.562 in axial width sets the seal cavity depth.

Mounting data

Housing Bore: 5.5 in (139.7 mm) — the finished bore the seal presses into. Outer Diameter: 5.506 in (139.852 mm) is the free outside diameter of the case before installation, and the interference between the two figures is what retains the seal. Shaft Size: 4.5 in (114.3 mm).

Quantity and configuration

Unit Quantity: 1 Pc. Single lip, spring loaded, one-piece metal-cased construction.

Interchange guidance

Searchable forms of the designation: 455200, 455-200, Timken National 455200, National 455200. GTIN: 053893489322. Sized 4.500 x 5.506 x 0.562 in.