Nichias Joint Sheet Gasket TOMB NO. 1120 Full surface Nominal diameter (A): 20 1120-5K-20A-3T-FF 1 sheet

Catalog number: 1120-5K-20A-3T-FF Features: * A joint sheet made mainly of expanded graphite that can be used in relatively high temperature conditions and can be used for low pressure steam. * Made mainly of expanded graphite, aramid fiber, and NBR rubber, it has excellent sealing properties, steam resistance, and chemical resistance. * It has a low amount of soluble halogen, so it can be used with stainless steel flanges. * Complies with JIS S 3200-7:2010 plumbing equipment and leaching test. Applications: * Various piping such as low pressure steam, steam return water, cold water, hot water, and air conditioning drains. Specifications: ●Nominal diameter A: 20 ●Nominal diameter B: 3/4 ●Inner diameter (mm): 28 ●Outer diameter (mm): 85 ●Thickness (mm): 3 ●Operating pressure (K): 5 ●Bolt hole center diameter (mm): 65 ●Number of bolt holes (pcs): 4 ●Bolt hole diameter (mm): 12 ●Operating temperature range: -200 to 260°C ●Maintenance-free: 150°C or less ●Maximum operating pressure: Water-based fluid 2 to 4MPa / Oil-based fluid 1 to 4MPa / Gas-based fluid 1MPa ●Maximum pressure value varies depending on temperature ●JIS K 6353: 1997 Water supply rubber leaching test compliant Material / Finish: ●Expanded graphite ●Aramid fiber ●Nitrile rubber (NBR) Caution: ●When using with gas-based fluids, use paste in combination. ●When tightening the gasket, be careful not to damage it by overtightening, and do not exceed the allowable tightening surface pressure. ●Please contact us to confirm the use of fluids that require chemical resistance.