Since 1917 all Silca pumps have used steam pressure-formed leather cup washers to achieve high pressures. In 2008, Pista and SuperPista pumps moved from steel barrels with 28mm inner diameter, to aluminum barrels with 30mm inner diameter.
- Contains: locking nut, lower washer, back nut, pre-2008 back washer and post-2008 back washer.
- Fits 30 mm internal diameter Pista and Super Pista pumps (2008 and later)
- Made from finest quality full grain leather
- Produced by hand on the same equipment continuously since 1960
- Updated from 2.25 mm to 2.50 mm thick leather for improved durability
- Hand crafted in Milan, Italy