The newly developed Turcon® Variseal® SA from Trelleborg Sealing Solutions provides a PTFE based sealing solution suitable for the solid seal glands preferred by aerospace engineers. This seal offers easy installation combined with high temperature operation, chemical resistance and low friction, making it suitable for high frequency aerospace applications such as flight control.
Aerospace engineers favor use of solid seal glands to simplify seal installation
To house seals, aerospace engineers favor use of a solid seal gland, a simple groove cut into component hardware, to simplify installation. Slipper seals, which are compact in design, can fit into these without a problem.
Turcon® Variseal® is a preferred seal option in aerospace applications.
However, the spring energized Turcon® Variseal® is often a preferred seal option, because it has a number of advantages in aerospace applications. Its jacket of Turcon®, the Trelleborg Sealing Solutions proprietary PTFE based material, is capable of operating in extremes of temperature and is resistant to aggressive aerospace fluids such as synthetic hydrocarbon, petroleum base, phosphate ester and all types of aviation jet fuels. Turcon® also has a very low coefficient of friction, which optimizes sealing load, making it ideal for the high frequency cycling of aerospace primary flight controls.
Turcon® Variseal® SA is a PTFE based seal suitable for the solid seal glands preferred by aerospace engineers
Turcon® Variseal® SA has been specially designed for solid seal glands
During installation into a solid seal gland, seals need to be compressed substantially. Due to the lip configuration of the Turcon® Variseal®, the spring energizer within it tends to flare its jacket outwards. This makes installation of Turcon® Variseal® very difficult without a split seal gland, especially in smaller diameter housings. The problem is solved with Turcon® Variseal® SA, which is specially designed for closed glands.
Unique Slantcoil® allows fitment of Turcon® Variseal® SA even in small diameter seal glands
The unique Slantcoil® spring of Turcon® Variseal® SA is not susceptible to compression set and can accommodate more deformation than other springs during installation. While providing all the inherent capabilities of a Turcon® Variseal®, the Turcon® Variseal® SA is suited for fitment in even the smallest diameter Mil-G-5514F glands.
Turcon® Variseal® SA gives real benefits
“The development of Turcon® Variseal® SA represents a significant product advancement, bringing real benefits to our customers,” says Brian Bowen, chief product engineer responsible for the new Turcon® Variseal® SA at Trelleborg Sealing Solutions Bridgwater. “It expands the use of Turcon® Variseal® in aerospace applications and as Turcon® Variseal® SA can directly replace slipper seals or O-Rings in standard grooves, Turcon® Variseal® SA can give improved performance in existing housings.”