PolyPak Hydraulic Seal with Beveled Lips (BPP) | Parker NA
687567
687567

PolyPak Hydraulic Seal with Beveled Lips (BPP)

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Parker’s BPP Profile, Beveled Lip Type B PolyPak® hydraulic seal is a rectangular shaped symmetrical squeeze seal with a knife trimmed beveled lip for hydraulic rod and piston sealing.

Use our configurator to build the right part for your application.
Description
    AVAILABILITY:  A sampling of Parker’s part numbers are shown in the configurator above for select materials and sizes. If the material and dimensions required are not shown, assistance with part number configuration may be found in the literature documents in the Product Support tab. To check current tooling, review the Part Number Look-up document. Contact Parker for requirements outside typical ranges.

    Parker's Type B PolyPak® (BPP Profile) is a squeeze seal with a symmetrical profile for use in either rod or piston applications in hydraulic systems. The rectangular shape of its cross section ensures stability in the gland.   

    The standard Molythane shell (seal body) provides high wear resistance and the O-ring energizer element functions as a spring to maintain sealing contact under low pressure or vacuum applications.   The beveled lip design of the Type B PolyPak is excellent for cutting fluid film. The sharp beveled lip is formed by a precision knife trimming process.

    A wide selection of sizes and alternate compounds allow this profile to match up with many hydraulic applications. The Type B PolyPak is an economical choice as a stand-alone seal or can be used in tandem with a buffer seal. In piston applications, this seal will function as a unidirectional seal. Dual Type B PolyPak seals should not be installed back-to-back in bi-directional pressure applications, as a pressure trap between the seals may occur. Instead, for bi-directional piston sealing, incorporate a PIP Ring®.

    Standard Materials (Shell or Seal Body):
    • P4615A90 Molythane®; Temp -65 / +200F; Pressure* 5000 psi; Surface speed
Description

Performance Characteristics

Maximum Operating Pressure

2000 to 7000 psi

Body Material

FKM
TPU
TPC-ET
EPDM
HNBR
XNBR

Spring Material

FKM
NBR
EPR

For Fluid Type

Various (depending on material)

Color

Various (depending on material)

Thermal Application Type

Various (depending on material)

Durometer

75 to 95 Shore A
53 to 65 Shore D

Polymer Material Options

Fluorocarbon Rubber (FKM, FPM)
Thermoplastic Polyurethane (TPU, Resilon®, Ultrathan®)
Thermoplastic Copolyester Elastomer (TPC, TPE)
Ethylene Propylene Rubber (EPM, EPR, EPDM)
Hydrogenated Nitrile Butadiene Rubber (HNBR, HSN)
Nitrile Butadiene Rubber (NBR, XNBR)

Specifications Met

Various (depending on material)

Media

Hydraulic

Unit of Measure

Length: inch

Maximum Surface Speed

100 ft/min
0.5 m/sec

FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE. This document and other information from Parker-Hannifin Corporation, its subsidiaries and authorized distributors provide product or system options for further investigation by users having technical expertise. The user, through its own analysis and testing, is solely responsible for making the final selection of the system and components and assuring that all performance, endurance, maintenance, safety and warning requirements of the application are met. The user must analyze all aspects of the application, follow applicable industry standards, and follow the information concerning the product in the current product catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors. To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifications provided by the user, the user is responsible for determining that such data and specifications are suitable and sufficient for all applications and reasonably foreseeable uses of the components or systems...

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