Sealing Applications

Click on any of the links below to see more detailed information on each application.

	Inflatable Seals for Nuclear Pool Gates    Application Details
	Personnel Airlock and Escape Lock Door Inflatable Seals    Application Details

Inflatable seals used in Nuclear Energy applications typically consist of:

1. Molded construction (rather than extruded) for close cross section tolerances.
2. A fully molded configuration (i.e., there are no after cure spliced joints that could be possible weak points).
3. Fabric reinforcement for maximum structural integrity.
4. Use of certified materials that have met the necessary radiation resistance testing. Contact Pawling for more information.
5. Adherence to a sound quality assurance program. All steps in engineering, manufacture, inspection and test are closely controlled by our nuclear quality assurance program based on ANSI N45.2 and 10CFR50 Appendix B.

Note: Replacement seals and gaskets may be purchased through your airlock/equipment hatch supplier.

Other Applications Include:

Reactor Pressure Vessel Nozzle Plug Seal Assemblies

Pawling furnishes for these plugs special resilient inflatable seals and/or flexible gaskets. Key features are:

1. Radiation resistance
2. Fabric reinforcing of the inflatables for maximum strength and durability
3. Good resistance to compression set in the compression seals and flexible gaskets.

PWR Steam Generator Nozzle Plug Seal Assemblies

Pawling has considerable experience in various design concepts for these plugs. Typical arrangements include inflatable seals, independently valved for redundancy, with a noninflatable backup seal (lip seal or compression gasket). Since the aluminum plug has joints where sections are fastened together, an elastomeric diaphragm, vulcanized around its outer periphery to the inflatable seals, covers the plug and seals the joints on the "wet" side.

We will assist you in the design of complete plug assemblies for new installations. For existing plugs, replacement seals and gaskets may be purchased through your original nozzle plug supplier.

Other Elastomeric Seals and Fabrications

Whatever your need for nuclear quality rubber seals and fabrications, contact us. Undoubtedly we can provide the answer with one of our many custom formulations of:

• Radiation resistant EPDM
• Neoprene
• Silicone
• Natural Rubber
• Viton®
• Nitrile/BUNA N
• Polyurethane
• Butyl

Most of these materials can be supplied with special woven or knit fabric reinforcing of:

• Nylon Kevlar®
• Polyester Nomex®

Some of the many products for which you may have need are:

• Sheet/Strip Blow out panel seals
• Gaskets for manways, drain cover, etc.
• Filter system access door gaskets
• Washers and "O" rings Inspection hatch seals
• Damper seals Expansion joints
• Shield plug seals

Viton®, Kevlar®, and Nomex® are registered tradenames of E.I. DuPont.