Zeluga 883-892 876-713 GV45V 877-761 Gasket Kit for NV45AA, NV45AB, NV45AB2M Pneumatic Coil Roofing Nailerr. These set of gasket are for maintaining air pressure and ensuring the efficient, safe operation of the nailer. Stainless Steel construction is impossible to crack and an optimum material for enhanced sealing. Rubber coated metal can be resilient for extremely tough and high pressure use. Rubber coating provides increased conformabilityto irregular surfaces. Assembling and disassembling easier with its rigid structure. Rubber coating makes them dimensionally stable solution for reliability.