Seals and wipers: Hardness 70-90 Shore A

Component Specifications

Definition

Seals and wipers are critical protective elements in linear motion systems, specifically designed for linear guide rails and actuators. Seals create a barrier to retain lubricants within the system while preventing internal contamination, while wipers actively scrape away external contaminants like dust, chips, and liquids from the rail surface before they enter the system. These components work in tandem to maintain optimal performance, extend service life, and reduce maintenance frequency by protecting precision rolling elements and raceways from abrasive wear and corrosion.

Working Principle

Seals function through elastic contact pressure against moving surfaces, creating a physical barrier that blocks contaminant ingress and lubricant egress. Wipers operate on a scraping or wiping action, using flexible lips or blades to mechanically remove particulate and liquid contaminants from the rail surface as it moves through the wiper assembly. Both utilize material elasticity and precise geometry to maintain consistent contact without excessive friction.

Materials

Typically made from synthetic elastomers: Polyurethane (PU) for high wear resistance and durability, Nitrile Rubber (NBR) for oil resistance, Fluorocarbon (FKM/Viton) for chemical and high-temperature resistance, or Silicone for wide temperature ranges. Some incorporate fabric or metal reinforcements for structural stability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	70-90 Shore A
Lip Design	Single, double, or multi-lip configurations
Compatibility	Matched to rail width, height, and groove dimensions
Installation Method	Snap-in, adhesive-backed, or retained by metal cases
Operating Temperature	-40°C to +120°C (varies by material)

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 3601-1, DIN 3760, ISO 6194

Parent Products

This component is used in the following industrial products

Linear Guide Rails / Actuators

Precision linear motion components that provide guided movement and actuation within automated transfer systems.

View Product Details

Guide Rails & Carriage

Precision linear motion system that provides stable guidance and support for the cutting head in a flying shear or saw.

View Product Details

Engineering Analysis

Risks & Mitigation

Material degradation from incompatible chemicals
Insufficient sealing leading to lubricant loss
Excessive friction from worn or damaged lips
Installation damage compromising seal integrity
Temperature extremes causing hardening or softening

FMEA Triads

Trigger: Abrasive contaminants entering the system
Failure: Premature wear of rolling elements and raceways
Mitigation: Regular inspection and replacement of wipers; use of multiple sealing stages

Trigger: Lubricant leakage due to seal failure
Failure: Increased friction, overheating, and eventual seizure
Mitigation: Proper seal selection for lubricant type; regular lubrication system checks

Trigger: Chemical attack on elastomer materials
Failure: Seal hardening, cracking, or swelling leading to loss of sealing function
Mitigation: Material compatibility verification; use of chemical-resistant elastomers like FKM

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.2mm on critical dimensions for proper fit and function

Test Method

IP ratings for dust/water ingress protection; ASTM D2000 for material properties; functional testing under simulated operating conditions

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Seals and wipers

Manufacturer profiles associated with Seals and wipers.

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Frequently Asked Questions

What is the difference between seals and wipers in linear guides?

Seals primarily retain lubrication inside the system and block fine contaminants, while wipers actively scrape away larger external contaminants like dust and chips from the rail surface before entry.

How often should seals and wipers be replaced?

Replacement intervals depend on operating environment and hours; typically 6-24 months in normal conditions, but more frequently in high-contamination or extreme temperature environments.

Can seals and wipers be used interchangeably between brands?

Generally no - they are designed for specific rail geometries and dimensions. Always verify compatibility with the manufacturer's specifications.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Seals and wipers