Single-bite sealing ring

stainless steeltwin biteNBR

Product name
SPI Seals - Lip seals for rotating shafts

Description
Ideal for rotating parts. Lip seals designed for dynamic sealing on rotating shafts; available in single- or double-lip configurations.

General information

• References shown in bold on the website indicate items held in stock.
• For large orders, seals can be manufactured in alternative elastomer compounds.
• References ending with 01 and those in FKM include a stainless steel spring.
• Production of ranges II and IIL (drowned spring) is being phased out; if a reference is unavailable, use IE (fluorocarbon elastomer) or IEL (nitrile with stainless steel spring) of equivalent size or thickness.

Advantages

• Specifically developed for rotating components.
• Lip profile provides firm, continuous contact for dynamic sealing.
• Offered in single- or double-lip variants for varied protection levels.

Specifications
The SPI seal, or lip seal, is widely used in the automotive sector and other industries where dynamic sealing of rotating parts (crankshafts, camshafts, wheels, etc.) is required. It is not intended as a substitute for static O-rings.

IGS / 3D files and Documents
An IGES 3D file is available (reference 722026). A product PDF (technical document for rotating shaft seals) and the Paulstra Industry catalogue 2019 are available for download.

Technical specifications

• Product family: SPI Seals (lip seals) for rotating shafts.
• Lip options: single lip or double lip.
• Typical applications: crankshafts, camshafts, wheels; primarily automotive sector.
• Material variations: seals can be produced in different elastomer compounds on major orders.
• Spring: references ending in 01 and FKM include a stainless steel spring; ranges II and IIL (drowned spring) are being phased out.
• Replacement guidance: if II/IIL references are unavailable, use IE (fluorocarbon elastomer) or IEL (nitrile) with stainless steel spring of equivalent size or thickness.
• Design intent: optimized for dynamic sealing, not intended for static sealing applications where O-rings are preferred.