Nuclear-grade inflatable seals for containment penetrations, hot cells, shield doors and PWR outage service. Radiation-resistant elastomers, fail-safe design, made in the USA.
Nuclear facilities seal against a different standard: radiation exposure, qualification requirements, and barriers that must hold even when systems lose power or pressure. DRI manufactures nuclear-grade inflatable seals and nuclear seal systems, from PWR outage maintenance seals to containment penetrations, shield doors, gloveboxes, hot cells and container closures. Nuclear-grade elastomers (EPDM, silicone and butyl) are selected for radiation resistance and thermal stability, and the dual-seal nuclear seal line provides passive fail-safe redundancy that stays sealed without active monitoring.
Nuclear seal systems for PWR steam generator channel head isolation and reactor coolant system hot and cold leg nozzle isolation during outages. The dual wet-seal + dry-seal design is passive and fail-safe, enables parallel refueling and steam generator maintenance, and saves 5–14 days of critical-path outage time per steam generator. Also pool gate seals and airtight door seals. Full detail on the nuclear seals product page and the nuclear industry page.
Custom inflatable seals for containment penetration isolation and secondary barriers, glovebox and hot cell closures, sliding shield and lab doors, piping penetrations, and sealing of drums and containers holding nuclear material. Serves national laboratories, fuel-cycle facilities, radiopharmaceutical production and university research programs. Seals retract for access and inflate to restore the barrier.
Every seal is engineered to the barrier it closes and the qualification it must meet. The ranges below are the envelope DRI builds to.
| PWR / RCS Service | Facility Containment | |
|---|---|---|
| Material | Nuclear-grade elastomers qualified for RCS chemical and radiation environments | Nuclear-grade EPDM, silicone or butyl selected for radiation resistance |
| Design | Dual wet seal + dry seal, passive fail-safe redundancy | Single or redundant inflatable seals; endless loops with molded corners |
| Failure behavior | Stays sealed if air pressure is lost; zero active monitoring | Engineered to the barrier requirement |
| Geometry | Custom bore sizes | Doors, penetrations, drums, gloveboxes; custom to the opening |
| Documentation | Material and manufacturing documentation to the application's qualification and traceability requirements | |
DRI works from any of three things:
The nuclear seal technical sheet covers the dual-seal design in detail, and the seal profile library shows the standard sections DRI starts from.
Nuclear-grade elastomers (EPDM, silicone and butyl) are selected for radiation resistance and thermal stability in reactor and facility environments, and the seal is engineered and documented to the application's qualification requirements. DRI manufactures nuclear seal systems for PWR maintenance as well as containment and facility seals, and supplies supporting documentation with the product.
DRI's nuclear seal systems use a wet seal and a dry seal working in tandem. The redundancy is passive and fail-safe: the system stays sealed even if inflation pressure is lost, with no active monitoring required. The design is used for PWR steam generator and reactor coolant system isolation, where it saves 5 to 14 days of critical-path outage time per steam generator.
Yes. Custom inflatable seals serve containment penetration isolation and secondary barrier applications, glovebox and hot cell closures, sliding shield doors, and container and drum sealing in fuel-cycle and radiopharmaceutical facilities. The seal retracts for access and inflates to close the barrier.
Yes. Send the part number, a cross-section sketch, or a sample, and DRI matches the profile so it fits the existing groove. Facilities replacing legacy or discontinued seals use this to keep qualified hardware in service.
DRI supplies material and manufacturing documentation to the level the application requires, and publishes a nuclear seal technical sheet with design details. Tell DRI the qualification and traceability requirements with the inquiry so they are built into the quote.