Nitrile (beater-add, NV-512); 3-Year Full Warranty. 
Brand New gasket with guaranteed fit and function. All Materials and Manufacturing Sourced and MADE IN USA. 
Listing picture depicts Nitrile Gasket material. This gasket material is treated chemically to seal against oils, water, alcohol, grease, air, gasoline and solvents.
If you need any assistance, feel free to ask.

Fits:

KZ650-B1 (1977)
KZ650-B2 (1978)
KZ650-B2A (1978)
KZ650-B3 (1979)
KZ650-C1 Custom (1977)
KZ650-C2 Custom (1978)
KZ650-C3 Custom (1979)
KZ650-D1 SR (1978)
KZ650-D1A SR (1978)
KZ650-D2 SR (1979)
KZ650-E1 LTD (1980)
KZ650-F1 (1980)
KZ650-H1 CSR (1981)
KZ650-H2 CSR (1982)
KZ650-H3 CSR (1983)
KZ700-A1 (1984)
KZ750-E1 (1980)
KZ750-E2 (1981)
KZ750-E3 (1982)
KZ750-F1 LTD Shaft (1983)
KZ750-H1 LTD (1980)
KZ750-H2 LTD (1981)
KZ750-H3 LTD (1982)
KZ750-H4 LTD (1983)
KZ750-L3 (1983)
KZ750-N1 Spectre (1982)
KZ750-N2 Spectre (1983)
KZ750-R1 GPz (1982)
ZN700-A1 LTD Shaft (1984)
ZN700-A2 LTD Shaft (1985)
ZR750-C1 Zephyr 750 (1991)
ZR750-C2 Zephyr 750 (1992)
ZR750-C3 Zephyr 750 (1993)
ZR750-F2 ZR-7 (2000)
ZR750-H1 ZR-7S (2001)
ZR750-H2 ZR-7S (2002)
ZR750-H3 ZR-7S (2003)
ZR750-H4 CANADA ONLY (2004)
ZR750-H5 CANADA ONLY (2005)
ZX750-A1 GPz 750 (1983)
ZX750-A2 GPz 750 (1984)
ZX750-A3 GPz 750 (1985)
ZX750-E1 GPz 750 Turbo (1984)
ZX750-E2 GPz 750 Turbo (1985)