With over 15 years development, Tihai Sealing Products Co.,Ltd. have become a leader China oil seal manufacturer of seal components and machine tool accessories. We had obtained international certificate of ISO9001:2000 and QS9000 in 1996 and got the certification of ISO/TS16949 in 2003. And we produce all kinds of customized oil seals in varies materials of engine system (including exhaust system and muffler) in automobiles and motorcycle. While producing products of our own brand, we also provide OEM products with origin production of some famous brands such as B+S, NOK, TTO, VALQUA and DZ.

a) Material: synthetic rubber and fiber
b) Used to seal air, water, or chemicals in machines from dust and oil
c) Packed in materials that will not damage or contaminate the rubber
d) Main rubber material: NBR, HNBR, FKM, SBR and PTFE
e) We have Toyota, Hino, Honda, Isusu, Nissan, Mitsubish, Mazda and Iveco oil seals.
Oil Seals available in over 100 different types, from single-lip designs to metal-clad seals, fit shaft sizes ranging from 3.2 to 317.5 mm. They meet ISO 6194 standards and are available in 4 base polymers: Nitrile, Polyacrylate, Silicone, and Fluoroelastomer. ASTM D2000-standard seals retain lubrication and exclude dirt and moisture. Oil Bath Seals, for wheel hubs, offer 4 unitized, one-piece designs with metal or Nitrile-covered OD, ground surface, and front chamfer.

The drive side of a Lambretta has one large main bearing and a single oil seal to stop the gasoline/air mixture leaking in to the transmission and visa/versa. The following steps are from a Lambretta GP 200 but can be adapted to most Lambretta models starting with the Series I bikes. The images show a stripped GP 200 block with all the components removed. You'll need:
One new drive side bearing (FAG 6305.C3).
One new drive side oil seal.
New drive side seal washer.
4 M6 x 1.00 thread by 20mm long allen drive cap head machine bolts or 4 Phillips head M6 x 1.00 by 20mm.
4mm allen head driver or large Phillips screwdriver.
Thread lock.
A blow torch.
A hammer and drift or a series of washers and bolts to draw the bearing in to the casing.
Some high melting point grease.
The best thing to start is to freeze the drive side bearing. Freezing metal just causes it to slightly contract. It is nothing you can see or feel but it will make putting the parts together much easier.

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