Construction
TOMBO No.2250 features a core of specially lubricated heat
resistant inorganic fibers. The exterior of the core is made of
expanded graphite (Graseal), strengthened with heat resistant
metal (316L stainless steel) filaments and treated with a special
lubricant, graphite, and anti-corrosion materials. This adapter
packing is well suited to high temperature and high pressure valves.
■Features
1. 100% asbestos-free.
2. When used with a Graseal packing, provides the same seal
performance as our conventional Graseal packing sets
(TOMBO No.2205-L with TOMBO No.2930, etc.) while
greatly lowering friction resistance.
3. Little differences in performance from cryogenic to high
temperatures.
4. Expanded graphite (Graseal) has chemical resistance properties
second only to PTFE, and can be used with almost any fluid
(with the exception of those listed on page 6).
5. Less weight loss at high temperatures than asbestos
packings, with little stress relaxation.
Max.Temperature －240～400℃ (oxidizing atmosphere, in air)
－240～600℃ (non-oxidizing atmosphere)
Max. Pressure 43MPa (when used with a TOMBO No.2205-P or other Graseal packing)
Pressure Class 4500
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