Seals for high-end bicycle shock absorbers
Meeting zero leakage requirements
Trelleborg Sealing Solutions and A-Pro Tech Co. Ltd., a Taiwanese company that specializes in high-end shock absorbers for bikes, began a relationship 10 years ago when Trelleborg Sealing Solutions helped A-Pro solve a problem with leakage from rear shock absorbers.
The solution replaced existing seals with a complex configuration of specialized seals including a piston ring in Turcon®, Trelleborg Sealing Solutions proprietary PTFE based sealing material and U-Cup in Zurcon®, its proprietary Polyurethane based sealing material. The sealing system has excellent overall sealing characteristics, a key element in the effective performance of A-Pro’s shock absorbers in difficult off-road and mountain terrain conditions. It also ensures exclusion of external media, the ingress of which is a potential cause of failure, and most importantly meets zero leakage requirements.