Push Rod Tube Bottom Seal, for use on BSA models: C15.O.E.M: 40-0180 / 70-3391 / E3391Supplied: SinglesBSA C15 Push Rod Tube Bottom Seal, 40-0180 / 70-3391. GAS270ASKU: 40-0180 / 70-3391 / E3391£2.99PriceQuantity*Add to Cart