Products

Nuclear RPV Seals

Garlock Helicoflex offers two sealing solutions for the Nuclear Industry:

Nuclear O-Ring Seals
Helicoflex Spring Energized, Jacketed Seals*

Available Materials:

Alloy 718, 600 and X750
Stainless Steel 304
Other materials as designed

Typical Applications:

Reactor Pressure Vessel (RPV) head seals
Dry cask storage seals
Control and cut off valves
Piping
Pressurizer
Cooling water heat exchanger
Boric acid storage tank
Performance Characteristics:
Sealing level: Q< or = 10-12 cc/sec He
Temperature: Cryogenic to 1800° F
Pressure: Ultra high vacuum to 50,000 psi
Excellent resistance to radiation and corrosion
Extended service life

Additional Information:

40+ Years meeting the needs of the global nuclear industry
Unique packaging reduces worker exposure to radiation
World wide delivery service.
Quality programs meet 10CFR50A Appendix B and NQA1
Audited by all Nuclear Steam Supply systems manufacturers
Emergency manufacturing and delivery possible
Onsite inspection / consultation offering:
- Groove inspection
- Seal repair
- Installation assistance
- Installation supervision
- Short notice availability

*The Helicoflex nuclear seal, unlike conventional O-Flex™, compensates for flange distortions due to age, temperature and pressure cycling. This seal does not depend on internal pressure of the application such as a reactor vessel.