Importers and Suppliers of
Automotive Engineering Products

Silver Seal

Engine Shop Tools & Supplies

In 1959 Silver Seal realised the need for a product that would enable engine rebuilders to renew the life of worn valve springs. This led to the invention, patent and production of the VSI® Valve Spring Insert.


In addition to these inserts, Fondera are able to supply an exhaustive range of machine shop supplies including amongst others:



Block Seal & Radiator Leak Stopper

Crack Repair Tooling

Engine Brush Kits

Flex Hones (for valve guides & cylinder bores)

Heat Tabs

Straight Edges

Valve Guide Drivers

Valve Guide Resizing Arbors

Valve Lapping Paste

Valve Stem Height Gauge Set

CALL 01865 341900 TO ORDER

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