70x132x12/30 mm TA‑Type Differential Pinion Oil Seal, Heavy‑Duty Axle

This 70x132x12/30 mm TA‑type stepped‑shell pinion oil seal is heavy‑duty sealing component for heavy‑truck differential pinion shaft / axle shaft applications. Stepped two‑tone painted metal outer shell provides firm press‑fit inside differential housing. Double‑lip with garter spring maintains consistent lip pressure on rotating shaft. It keeps gear oil inside differential housing, and prevents mud, splash‑water, road dust entering axle assembly, protects bearings and gear set from contamination damage. Aftermarket heavy‑duty replacement part, widely used for commercial trucks, heavy‑duty logistics vehicles. Suitable for auto‑parts wholesalers, repair workshops and overseas bulk procurement. Core functions Gear‑oil retention: Prevent differential gear‑oil leakage Mud & water exclusion: Resist splash‑water, mud and road‑grit ingress Stepped metal shell: Anti‑deformation during press‑fit installation Garter‑spring pre‑load: Stable sealing pressure under vibration and medium pressure

Material ：NBR nitrile rubber sealing lip, painted carbon‑steel stepped metal shell, stainless steel garter spring Structure ：TA‑type stepped‑housing double‑lip pinion oil seal Key properties ：Gear‑oil resistant, mud‑water resistant, vibration‑resistant, anti‑aging Working temperature:‑20℃ +120℃ Manufacturing features High‑temperature vulcanization bonding between rubber lip and metal shell to avoid delamination under vehicle vibration. Precision‑ground sealing lip reduces friction heat and extends service life under continuous rotating‑shaft operation. Two‑tone anti‑rust paint treatment for stepped outer shell, improves storage performance in humid environment. NBR compound formula compatible with heavy‑duty vehicle gear‑oil and transmission grease. Material upgrade option: FKM fluoro‑rubber variant for higher‑temperature or harsh chemical‑contact working scenarios.

Product Type ：Heavy‑duty TA‑type differential pinion / axle shaft oil seal for commercial heavy‑truck Key dimension ：ID 70mm × OD 132mm × dual width 12/30mm Compatible media ：Heavy‑duty gear‑oil, transmission grease. Working conditions: Truck differential, resist vibration, mud, splash‑water, medium pressure. Not suitable for ：Strong corrosive solvents, extreme ultra‑high‑temperature special‑purpose equipment. Buyer reminder ：This is aftermarket replacement seal. Please verify shaft diameter, housing bore dimension and working condition before placing order. Mismatched dimension will cause oil‑leakage after installation.

Selection Tips 1. Confirm dimension: ID70mm, OD132mm, dual width12/30mm; check shaft and differential housing bore tolerance. 2. Standard NBR for regular heavy‑truck gear‑oil conditions; select FKM upgrade for high‑temperature working environment. 3. Inspect pinion shaft and housing bore before installation; repair grooves, rust and burrs. Damaged mating surfaces will lead to early leakage. Installation Steps Preparation Thoroughly clean housing bore and pinion‑shaft surface, remove old seal residue, gear‑oil dirt, metal chips and burrs. Pre‑lubrication Coat sealing lip and shaft contact surface with matching heavy‑duty gear‑oil. Dry installation is strictly forbidden; dry friction will burn sealing lip quickly. Orientation Confirmation Main sealing lip faces differential gear‑oil chamber side; dust‑exclusion lip faces outward towards atmosphere. Wrong installation direction will cause direct oil‑leakage and lose mud‑proof function. Vertical Press‑fit Use suitable press‑sleeve tool to press oil‑seal evenly and vertically. Never strike rubber lip directly to avoid shell deformation and lip tearing. Seating Inspection Ensure oil‑seal sits fully flush inside housing bore without tilt. Visual Check Inspect sealing lip for tears and shell deformation. Tiny invisible damage triggers oil seepage after commissioning. Rotation Test Manually rotate pinion shaft to confirm smooth movement without abnormal binding resistance. Re‑assemble if abnormal resistance occurs.

Inner package ：Individual anti‑dust poly bag for each unit to protect sealing lip from scratch. Outer package ：Reinforced heavy‑duty export carton. Packing quantity ：50‑200 pcs per carton, adjustable per order requirement. MOQ ：No MOQ for stock items, sample order acceptable; bulk stock order MOQ:300 pcs. Lead‑time ：Stock items ship within 3‑5 working days; custom color, logo and export‑packaging orders 30‑45 working days. Custom options ：Custom logo printing, special color and export‑oriented packaging available, custom order MOQ≥1000 pcs. Shipping protection: Moisture‑proof, dust‑proof and compression‑resistant packing to prevent seal deformation during transit.