Presray. Corp. designs and manufactures inflatable elastomeric seals and other seals and specialty rubber products for use in a wide variety of industrial applications including nuclear power plants. Typical products include airlock door seals, other door seals, hatch seals, fuel pool gate seals, and reactor cavity refueling seals. Presray is ISO9001 registered and has a quality assurance program based on ANSI N45.2 and 10CFR 50 appendix B.