HG/T2579-94: O-ring rubber material Part 1: Mechanical Bearing 6000 Used in ordinary hydraulic systems. GB3452. Part 5 Suitability of elastic materials for industrial use GB3452. Part 1 ID, cross-section, tolerance and size identification code ISO 3601-5-2002 Fluid power systems. JISB2401-1991: O-ring specifications.O-ring seal Chinese national standard O-ring seal American national standard O-ring seal Japanese national standard O-ring seal British national standard O-ring seal French national standard O-ring seal German standard DIN 3771-1993 GB/T 5720-2008 Test method for O-shaped rubber sealing ring JB/T 6658-2007 Pneumatic O-shaped rubber sealing ring groove size and tolerance JB/ZQ 4224?97 O-shaped rubber sealing ring size series HG/T 2021-91 high temperature resistant lubricating oil O-shaped Rubber seal material HG/T 2333-1992 O-ring rubber material for vacuum HG/T 3089-2001 O-ring rubber material for fuel oil HG/T 2579-2008 O-ring rubber material for ordinary hydraulic system ISO 3601- 1-2002 Fluid power systems. O-rings.2-87: O-shaped rubber sealing ring appearance quality inspection standard.1-92: O-ring seal size series and tolerances for hydraulic and pneumatic. GB3452..3: O-shaped rubber sealing ring groove size and design calculation criteria for hydraulic and pneumatic. O-ringsThe cold shrink assembly method generally uses liquid nitrogen as a cold source, and requires a certain insulated container, so it can only be used when conditions permit.912.1~17.517.5 aluminum alloy 23-18 magnesium alloy 26-2l Note: The heating temperature of carbon steel should not exceed 400℃.2 Carbon Steel 10. The basic principle of hot-set matching The essential principle of hot-set matching is to heat the containing part (hole) to expand its diameter by a matching interference value, and then install the contained part (shaft).618~18. Therefore, the heating temperature needs to be: t=(i+⊿)/( 103*a*D)+ to For the value of ⊿, K=i+⊿=3i~6i can be simplified, so that the value of ⊿ is slightly larger.3~1312. There are several methods for assembling the interference couplings: press-fitting