Metal O - rings are engineered to offer a sealing solution for high - pressure and high - temperature applications where minimal spring back is needed. The metal O - ring is fabricated from high - strength metal tubing. This tubing is coiled, cut, and then welded to the appropriate size. It comes in standard cross - section increments of 1/32”. The seating load of the metal O - ring can be adapted to the specific application by changing the cross - section and the thickness of the tubing wall.
Advantages
High-temperature capability
Ability to withstand low temperatures
Present vacuum
Ability to withstand extreme applications (radioactive, corrosive)
Reusable in many cases
Present a long-term seal – no material disintegration
Long storage life
Self-energizing forcesOptimized spring back, load and outer sealing layered hardness
Chemical compatibility
The Standard Type
The Standard Type of metal O-rings, made from various metallic tubings or solid wire, is an economical choice for applications with low to moderate pressure or vacuum ratios
Non-circular geometric and custom shapes. (Racetracks, rectangles, ellipses, etc.)
· Features & Benefits：
· Custom shapes and sizes available
· Cross-section and wall thickness designed to control loading
· Available for internal and external pressure
· Styles: regular and vented/pressure balanced
· Range of materials (SS 321, Alloy 600, X750, 718) – others available
· Platings and coatings: silver, gold, nickel, PTFE (others available)
· Low Temperatures from -273°C t and Elevated extended use up to 1800°F. Short bursts of temperature up to 1,200°C (2,200°F)
· Pressure: from high vacuum to 500+ bar (7,252+ PSI)
· Leak range: approximately ≤ 1 x 10-4 std.cc/sec Air to ≤ 1 x 10-9 std.cc/sec He. The actual leak rate will depend on seal load, surface finish, and surface treatment.
Applications
· Nuclear: reactor pressure vessels, control rods, spent fuel casks
· Plastics/film: extrusion, spinnerets, fitters, hot runners
· Industrial: compressors, waste heat
· Automotive: head/cylinder sealing
· Defense/military: MS O-rings
