Zero Seals Catalogue

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TheHallite 511 is a standard profile loaded U-cup with precision trimmed sealing lips manufactured in either a polyurethane or polyester shell energised by a high quality O-ring and designed for common North American square grooves.

At zero or low pressure, the O-ring helps to increase the sealing force preventing any bypass. Under most conditions as the pressure rises, the sealing force increases and the O-ring ensures complete lip actuation.

The symmetry of the Hallite 511 makes it ideally suited for single-acting rod and piston applications and its flexibility enables easy installation. The 511 can also be fitted back-to-back for use in double-acting applications. Although the Hallite 511 can be used as a rod seal, other Hallite non-square rod seals are more suitable options, such as the Hallite 513, 605, or 621.

Hallite acknowledges the Traditional Owners of Country throughout Australia and recognises the continuing connection to lands, waters, airways and communities. We pay respect to Aboriginal and Torres Strait Islander cultures; and to Elders past and present.

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The OptiSeal Face Seal is a derivative of the traditional OptiSeal design that maximizes seal performance in face seal configuration. The OptiSeal Face Seal AA Lip profile utilizes a flat band helical spring, this seal design provides excellent sealing performance at pressures from vacuum to 10,000 psi (690 bar) and the high loaded flat band helical spring energizes the Armorlene jacket which provides excellent leakage control for application temperatures from cryogenic to +500F (260C).

The OptiSeal Face Seal BB Lip profile utilizes a V-spring. The V-spring acts as an energizer during low pressure situations and overcomes the non-resilient nature of Armorlene PTFE materials. The spring force is applied directly over the sealing lips creating a zero-leak seal. As pressure is applied the spring cavity is pressure energized, assisting the spring load. These face type seals are designed for static applications and both are available in all SAE-AS6235 Face Seal Gland specification sizes.

60 years of worldwide service in oil, gas, chemicals, water, slurry, and multiproduct applications has established the Pow-R-Seal double expanding gate valve as one of the most trusted gate valves, especially where safety and seal reliability are critical.

The positive, mechanical seating force of the lock-in-place seals holds with zero leakage through conditions of vibration, pressure change, and temperature excursion. The rigid, cast steel body resists pipeline bending moments.

TFE seals on both faces of the valve provide drop-tight sealing even at low differential pressure, while metal-to-metal contact between the seals and gate mechanism provides fire-safe shutoff. Optional all-metal seals also are available for service up to 1,000 degF [538 degC], where leakage rates comply with API Spec 6D, Supplement 2.

High-quality, through-conduit, expanding gate valves engineered for performance in critical isolation applications where a tight mechanical seal that is normally unaffected by pressure variations and vibrations is needed. View

Flanges can be one of the most common trouble areas in a CP System. Flanges need to be sealed properly to prevent leakage and must be cathodically isolated to prevent stray currents which cause undo corrosion and eventual breakdown of the metal.

Type D gaskets are specifically designed to fit into the ring groove of ring-type-joint flanges. They are manufactured of a medium weave, fabric-reinforced phenolic material and are sized to ANSI specifications available in basic oval as well as octagonal shape. Also available are BX gaskets with pressure ratings to 15,000 PSI.

Type E is a full-faced gasket with the same outside diameter as the flange and precision cut bolt holes. This design facilitates proper alignment of the gasket during installation and foreign material prevented from shorting the flange isolation. Type E gaskets are available in plain face or Nitrile faced phenolic, as well as a variety of high temperature materials. Standard thickness of 1/8".

Type F gaskets are made to fit the raised face portion of the flange only. As there are no bolt holes in the F gasket, the inside diameter of the bolt hole circle is slightly smaller than the outside diameter of the gasket, assuring an exact, automatic positioning of the gasket. Type F gaskets are available in the same materials as the type E gasket. Standard thickness of 1/8".

Trojan gaskets are state-of-the-art in near zero leakage static sealing. The elastomer sealing element is encapsulated in the electrically isolated retainer. The encapsulation of the sealing element permits only microexposure of the seal to hostile environments of fire, chemicals and corrosive fluids.

The controlled confinement of the elastomer sealing ring within the retainer allows for the availability of a 92% to 94% volume filled groove. A consistent controlled pressure seal can always be obtained without tremendous bolt loads. Reduced loads allow for reduced flange thickness with smaller circles and smaller bolt holes.

Four seals on the Duplex-Seal Trojan further ensure the integrity of the sealing capability of an already proven reliable gasket. For areas where absolute zero leakage is a must, the Duplex-Seal Trojan works twice as hard.

Trojan G-10 cathodic water meter isolating gaskets are NSF-61 approved and state of the art in near zero leakage static sealing for use in preventing galvanic reaction from the use of dissimilar metals on water piping such as steel or cast iron to brass. The elastomer sealing element is encapsulated in the electrically isolating retainer. The encapsulation of the sealing element permits only microexposure of the seal to potable water flow. G-10 Gasket Kits are designed to keep any and all electrical currents from running back to the water meter.

With each isolating washer, an S.A.E. electroplated steel washer is provided to protect the isolating washer from damage by the nut. APS flange isolating gasket kits are available in single or double washer kits.

Each APS Flange Isolation Gasket Kit is packaged individually in durable corrugated boxes. Isolating sleeves and washers are packaged separately and are cushioned within the box to protect them from damage during shipment.

Each set is clearly tagged with flange size, pressure rating, type of isolating sleeve, and whether it is a single washer or double washer set. A recommended bolt tightening sequence sheet is provided with each kit.

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