Nitrile rubber has excellent oil resistance, wear resistance, heat resistance, and strong adhesion. It is widely used in the production of oil-resistant gaskets, O-rings, casings, hoses, rubber rollers, cables and wires. In actual production, the hardness requirements of O-rings in different applications are different, mostly among 50-90 degrees (Shore hardness); when nitrile rubber is used to produce high-hardness O-rings, the reasonable design formula can be further optimized product quality.
1. Reference formula for the seal ring of the dryer (hardness is about 80 degrees)
10 parts of nitrile rubber, 10 parts of zinc oxide, 1 part of stearic acid, 2 parts of antioxidant BLE, 28 parts of carbon black N330, 60 parts of carbon black N774, 10 parts of liquid coumarone, 2 parts of DCP; total: 213 parts .
100 parts of nitrile rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 1.5 parts of antioxidant D, 1.5 parts of antioxidant 4010NA, 60 parts of carbon black N330, 50 parts of spray carbon black, 15 parts of dioctyl sebacate, Accelerator TMTD 3 parts, sulfur 0.5 parts; total: 238.5 parts.
2. Formula of O-ring seal for hydraulic support (hardness is about 80 degrees)
100 parts of nitrile rubber, 5 parts of zinc oxide, 1 part of stearic acid, 1.5 parts of antioxidant MB, 0.5 parts of antioxidant RD, 50 parts of carbon black N330, 50 parts of spray carbon black, 10 parts of dibutyl sebacate, Accelerator DM 1.5 parts, Accelerator ZDC 1.5 parts, Sulfur 0.3 parts, DCP 2 parts; Total: 223.3 parts.
100 parts of nitrile rubber, 5 parts of zinc oxide, 1 part of stearic acid, 1 part of antioxidant MB, 2 parts of antioxidant RD, 50 parts of carbon black N550, 50 parts of spray carbon black, 12 parts of dibutyl sebacate, Accelerator DM 1.5 parts, Accelerator TMTD 0.3 parts, Accelerator ZDC 1.5 parts, Sulfur 2 parts; Total: 226.3 parts.
3. Jack injection pressure O-ring seal formula (hardness is about 90 degrees)
100 parts of nitrile rubber, 5 parts of zinc oxide, 0.5 parts of stearic acid, 1.5 parts of antioxidant AM, 100 parts of carbon black N550, 10 parts of triethylene glycol dicaprylate, 1 part of accelerator DM, 1.25 parts of accelerator TETD , Accelerator TMTD 1.25 parts, sulfur 0.5 parts; Total: 221 parts.
100 parts of nitrile rubber, 7.5 parts of zinc oxide, 1 part of stearic acid, 3 parts of antioxidant D, 135 parts of spray carbon black, 15 parts of dibutyl sebacate, 0.25 parts of accelerator D, 2.7 parts of accelerator DM, 2 parts of sulfur; total: 266.45 parts.
100 parts of nitrile rubber, 5 parts of zinc oxide, 1 part of stearic acid, 2 parts of antioxidant BLE, 60 parts of channel carbon black, 60 parts of spray carbon black, 4 parts of dibutyl sebacate, 4 parts of coumarone resin Parts, 2.5 parts of accelerator DM, 2 parts of accelerator ZDC, 1.5 parts of vulcanizing agent DTDM; total: 242 parts.
When using nitrile rubber to produce high-hardness rubber O-rings, rubber products can also be added with an appropriate amount of nitrile reclaimed rubber according to actual needs to further reduce raw material costs and production energy consumption under the premise of ensuring product quality; later editors have the opportunity to continue Share with you the application skills of nitrile reclaimed rubber in high hardness nitrile O-rings.
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