Document 0gbQopKVa0Z45bo3y8kK2o9kM
Application Number Application Name
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Generic Name of End
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Generic Name of Part
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Working Temperature Range Weather Resistance Chemical Resistance
Non-Adhesiveness Purity
E.2.12 (Energy) PTFE-containing composite packings, fluorine-based elastomer seal materials 9002-84-0
fluorine-based elastomers
gaskets,
Piping, valves, pumps, vessels
Seat gaskets, fluororubber O-rings, gland packings
"VALQUA_Group_Sustainability_Report_2022(extract)r1" "zm01_2007_Elastomer(extract)r2" "zy03_0611_Gland_Packing(extract)r2" "zy03_1601_Gasket(extract)r2"
Materials that can be used for seal members are selected according to the temperature and fluid. In specifications where fluorine-based materials are used, temperatures of -100C or lower, or 150C or higher, resistance to fluid, or purity is required, and they are expensive, but are used because they cannot be substituted with other materials.
(VALQUA product catalogs, etc.) The amount of raw materials used for this product is 44,823 tons/year, but the amount used only in Japan for the applications is estimated to be 139.6 tons/year. The amount used in one product is <20~50% by weight, which has a huge impact on the energy sector where it is used. Applications include valves, piping, and fittings in power generation plants, LNG storage facilities. Without this part, it would be impossible to operate equipment, or to operate plants, as it is connected by piping inside the plants. For the domestic scale for the applications in which PFAS is used: Electricity sold by power companies: 729.3 billion kWh/year City gas sales by city gas companies: 25,411 million m3/year -253C to 260C (PTFE), -15C to 200C (fluororubber)
No influence of direct sunlight
Stable against most chemicals. Slightly affected by molten alkali metals (solutions), high-temperature fluorine, and chlorine trifluoride. Wet resistance (Contact angle with water 110)
No impurities are eluted (ppb level or less) when in contact with chemicals
PVC
Working temperature range: -20C to 90C
PP
Working temperature range: -20C to 130C
High-Density PE Silicon Resin
Silicon Rubber
EPDM NBR (Nitrile Rubber) PEEK (Polyether Ether Ketone)
Remarks
Working temperature range: -80C to 70C
Silicone resin is inferior in solvent resistance, chemical (strong acid and strong alkali) resistance, and water resistance Silicon rubber is inferior to fluororubber in mechanical strength and solvent resistance when used as a seal member Working temperature range: -40C to 150C, EPDM is inferior to fluororubber in oil resistance Working temperature range: -50C to 130C, NBR is inferior to fluororubber in oil resistance Working temperature range: -269C to 240C, PEEK is slightly inferior to PTFE in acid resistance, PEEK is basically injection-molded, and cannot be blended with other materials Heat resistance https://www.kda1969.com/study/study_pla_compare.htm Chemical resistance https://www.kda1969.com/study/study_pla_chem.htm List of physical properties of rubber https://www.kayocorp.co.jp/common/pdf/rub_propertylist.pdf