Parker´s fastener seals are composite sealing washers, consisting of a metallic carrier and a vulcanized elastomer sealing lip. They provide a static sealing function on flanges or threaded connections, and consistently assure ideal compression conditions between the housing components to prevent the destruction of the sealing lip. Parker´s fastener seals provide long and reliable service, a high degree of reusability, and easy assembly. They have been engineered to eliminate over-compression, provide easy and accurate placement of the seal thanks to a self-centring design, and deliver improved joint stability via the solid metal-to-metal contact.
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Primary shaft oil seals for oil film bearings. The BBS® oil seals are available in both DF and MX style to fit every customers’ requirement.
Used in steel mill: back-up rolls (hot and cold rolling mills). The BBS® oil seals can be supplied together with the corresponding Water Seal, or with specific V-Rings (secondary seal).
Flange seals provide the front-face static sealing function within flange connections. There are two major design principles available, either for internal or external pressure. Various designs in a broad range of compounds provide individual features. Parker’s flange seals offer enhanced sealing performance from pressure-free to high-pressure conditions. Designs can be optimized to be insensitive to pressure peaks, show high extrusion resistance or media resistance.
Back-up rings are the most common anti-extrusion devices employed in dynamic and static sealing, designed to prevent the migration of sealing material into the extrusion gap under the system pressure. Parker offers a wide range of back-up ring geometries and materials to suit every seal type and application. They are open or closed shapes for snap assembly made of a broad range of compounds which are highly resistant to thermal or mechanical stress. Parker back-up rings help reduce costly downtime and ensure long-term functional reliability.
In pneumatic cylinders, cushioning seals are part of a design that provides for controlled final position retardation. Up on approaching the final position, a tapered sleeve, firmly located on the piston rod, progressively closes off the open passage toward the line connection of the cylinder. In this phase of motion, the defluent medium is led via a, usually adjustable, needle valve, the adjustment of which controls the degree of stroke movement retardation. During reverse operation, the cushioning seal designs provide a non-return valve functionality and ensure free flow. Parker offers robust seal profiles, suitable for the harshest operating conditions and showing extreme wear and high-temperature resistance.
