■MPB sales launched (2005.4.18)

We started general sales of Next Genaration Products ﾒMPBﾓ of Morisei Perfluoro O-ring.　We gained high reputations from the users in semiconductor, chemical and other industries through testing using actual machinery.
As for the characteristics, it has shown better heat resistance, mechanical and tensile strength compare to existing Purfluro O-ring. (Refer to the following material property list)
Test Item Unit MP-B competitive products
■Original State      
　　　　Hardness　※ A77 A76
Tensile Strength MPa 16.0 12.5
(kgf/cm2) (163) (128)
Elongation % 170 120
100% Tensile Strength MPa 10.0 11.4
(kgf/cm2) (102) (116)
■Air-oven aging test 230℃ x 70 hours (JIS ) dumbbell
Hardness point/Δpoint A79 +2 A73 -3
Tensile Strength MPa/Δ% 15.2 -5 11.8 -5
(kgf/cm2) (155)    (120)   
Elongation %/Δ% 230 35 160 +40
■Air-oven aging test 250℃ x 70 hours (JIS ) dumbbell
Hardness point/Δpoint A75 -2 A71 -5
Tensile Strength MPa/Δ% 13.6 -15 9.3 -26
(kgf/cm2) (139)    (95)   
Elongation %/Δ% 270 +61 240 +100
■Compression Set      
230℃ x 70 hours (JIS Disc) 23 Incapable measurement
250℃ x 70 hours (P26 O-ring) - -
300℃ x 70 hours (P26 O-ring) - -
The data on this list is a sample from actual measurement.
MP-B shows slightly better results to mineral acid such as hydrochloric acid, sulfuric acid, nitric acid, fluorinated acid and phosphoric acid, and to chemicals such as caustic Soda and others, and to hydrothermal and steam conditions. (volume change)
※ Tested by Durometer Type A