Set of ' O ' Rings to M/ s. FTRTIPL make consisting of 02 items as follows. 1 ) Exhaust valve ( Rubber seated ) ' O ' ring ID: 42. 86, Width: 3. 53 as per M/ s. FTRTIPL part no. 002705500A. Qty/ set. = 01 no. 2 ) Unloader valve ' O ' ring ID: 28. 17, Width: 3. 53 as per M/ s. FTRTIPL part no. 003703500A. Qty/ set. = 01 no.