One of the changes to the Triumph 750 models for the 1978 model year was the introduction of the “leak-proof” style of fork seal. The new pliable oil seal is retained with a reusable steel washer, or circlip, which is not included in this fork oil seal set. It replaces part number 97-7010.
The “leak-proof” type of fork seals is considered a “floating” design and is compressed into place by the retaining washer, or in some forks, a retaining circlip. The I.D. measures 34mm, while the O.D. is 48mm. Sourced from LF Harris in the UK.
The updated late-model T140 fork seal is designed to reduce stiction and running friction compared with the previous fork oil seals used on the 1971-1977 B-range models.
The floating-type fork oil seal can be fitted by hand and are retained in place by a steel washer or circlip.
The product images shown are for illustrative purposes only and may not be an exact representation of the product received. Manufacturers occasionally make minor cosmetic changes to items, such as color, finish, label, or design. These changes do not impact the item’s function or compatibility. Please contact us if you have specific concerns regarding appearance.









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