Stat-O-Seals are one-piece, molded-in-place seals with the rubber sealing element mechanically and/or chemically bonded to the metal retainer. This feature ensures a positive attachment of the rubber to the retainer, eliminating missing or loose seal elements associated with bonded seals. Stat-O-Seals are designed to seal beneath the head of the fastener for both internal and external pressure and or vacuum systems.

Stat-O-Seals offer users long and reliable service, a high degree of reusability and easy assembly. 

The Stat-O-Seal’s unique features provide many advantages and benefits as shown below:

• No machined O-ring grooves are required in the mating flange

• Precisely controlled optimum percent squeeze eliminates over compression

• The retainer edge is visible after installation allowing for easy visual inspection and reducing failures caused by missing seals

• The self-centering design provides easy and accurate placement of the seal

• The solid metal to metal contact improves joint stability and eliminates re-torquing

• Long reliable service and a high level of reusability

• Rubber/bolt interference provides for easy assembly

As the fastener is installed into the mating hardware, the Stat-O-Seal is compressed down to the retainer thickness. The retainer provides a positive alternate load path for fastener torque and forms a protective gland area for the confinement of the seal in a controlled state. Since the elastomer seal cannot move outward, the mass of the seal is forced inward against the shank of the fastener and against the mating surfaces, creating a positive seal. This principle is known as controlled confinement sealing.