Superior Parts GS1-Q Aftermarket Gasket Set Includes (SP 877-325Q, 326Q, 329Q, 331Q, 334Q). Premium quality gasket set s 100% satisfaction. These gaskets are formed with stainless steel that provides a high level of thermal, corrosive and pressure resistance to go with great durability and tensile strength. Fits Hitachi Framing Nailers (NR83A2 & NV83A2 Nail Guns) Features: Stainless Steel construction is impossible to crack and an optimum material for enhanced sealing Rubber coating provides increased conformability to irregular surfaces Rubber coated metal is a dimensionally stable solution for reliability Rubber coated metal can be resilient for extremely tough and high pressure use Rigid structure makes assembling / disassembling easier. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www. P65Warnings. ca. gov.