Teekay® Axilock Type I NBR

Teekay Axilock
(axially restrained)

The Teekay Axilock has two metallic anchor rings that dig into the pipe wall when the coupling is installed. This prevents the two pipes from pushing apart under pressure or pulling away under end-load.

Each coupling (whether Axilock or Axiflex) consists of a casing, a gasket and a lockpart. The purpose of the casing is to house the gasket and to press it onto the pipe surface when the lockpart is closed. The lockpart is designed to pull the two ends of the casing together circumferentially around the pipe. In order to achieve this, the coupling is labelled clearly with a torque figure which ensures that the gasket is compressed sufficiently against the pipe surface.

The Axilock has two anchor rings which are placed adjacent to, but separate from, the sealing mechanism. As the lockpart is tightened the sealing lips are pressed against the pipe surface to form a seal. At the same time the anchor rings penetrate the rubber, bite into the two pipes and prevent them from pulling apart, whether by external loading or internal pressure. The end seal is also pressed against the pipe surface, which protects both the anchor ring and the section of the pipe where the anchor rings have bitten, from any possible external corrosion.

Type I
Casing: AISI 304 / DIN 1.4301
Fasteners: Alloy Steel, Coated
Gasket: EPDM/NBR/H-NBR/FKM/VMQ

Type IV
Casing: AISI 316L / DIN 1.4404
Fasteners: AISI 316 / 316L
Gasket: EPDM/NBR/H-NBR/FKM/VMQ