Durus 400503 SC - 4" × 5" × 0.375" Oil Seal 88K Series com/products/d-and-d-15-3vk750-heavy-duty-v-belt"

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so the 9/B97 interchanges with Gates 9/B97

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The BlackStar 4545 3 3/4 is a 4545 series taper lock bushing with a 3 3/4" finished bore

Durus 400503 SC - 4" × 5" × 0.375" Oil Seal 88K Series com/products/d-and-d-15-3vk750-heavy-duty-v-belt"Same Shaft Size, Other Options Other Durus seals for 4" shaft diameter with different OD width combinations: 400482 VC400494 A400503 B400503 C400505 C The Durus 400503 SC is a 4" 5" 0. 375" rotary shaft oil seal (Single Lip + Dust Lip (Metal Case)) with NBR (Buna N) sealing lip. Designed for retaining lubricant and excluding contaminants in pumps, gearboxes, motors, agitators, and rotating industrial equipment. Specifications Part Number 400503 SC