T e c h n ic a l R e q u ir e m e n t
Product
Cryogenic seals for the liquid oxygen tanks
Specification
1. Seal will be seated on the manhole cover of the liquid oxygen
tanks. The followings are the specifications for the design of the
seal.
- Allowable leak rate 1E-3 cc/sec max.
- Static services only
- Operating pressure: 1~20 bar
- Operating temperature: -196℃~50℃
- Pressurizing medium: Helium gas and DI Water
- Dimension of the seal groove: OD: 750 mm; ID: 722.82 mm;
Height: 6.32/6.38 mm (OD can not be changed; ID and Height can
be changed but minimized as much as possible)
- Seal type: Extra jacket is made of PTFE; energized metal springs is
inserted into the jacket. Propose the allowable surface finish value.
- Elastic recovery of the seal should be maximized. During the
operation, initial compression of the seal is a little bit decompressed
upto 0.3 ~ 0.5 mm.
- Bolt PCD 770, Bumax 109 class, M10, 80 EA are used.
- Material of the manhole flange and cover which contacts with the
seal is aluminum alloy 2219-T851.
2. Quantity 5 EA
- Including the certificate of conformity (COC)