Sealing Strips: Hardness 70-90 Shore A, Compression Set <20%

Q: How often should sealing strips be replaced on linear guides?

Replacement intervals depend on operating environment and hours of use. In clean conditions, inspect annually; in contaminated environments, check every 3-6 months. Replace when visible wear, hardening, or loss of sealing contact occurs.

Q: Can sealing strips be used with different lubricant types?

Yes, but material compatibility is crucial. NBR seals work with mineral oils and greases, while FKM seals handle synthetic lubricants and chemicals. Always verify chemical resistance charts.

Component Specifications

Definition

Sealing strips are essential protective components installed on linear guide tracks to create a barrier against external contaminants such as dust, chips, and liquids. They maintain the internal lubrication system, reduce wear on rolling elements and raceways, extend service life, and ensure consistent precision in linear motion applications across industrial machinery.

Working Principle

Sealing strips function by forming a physical seal between the moving carriage and stationary track of a linear guide. They use flexible materials (often with integrated lips or brushes) that maintain contact with surfaces, scraping away contaminants and retaining lubricants. Some designs incorporate labyrinth seals or multi-layer structures to enhance protection in harsh environments.

Materials

Typically made from synthetic rubber (NBR, FKM, silicone), polyurethane (PU), or thermoplastic elastomers (TPE). Advanced versions may include felt layers, stainless steel scrapers, or fabric reinforcements. Material selection depends on temperature range (-40°C to 200°C), chemical resistance, and environmental conditions.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	70-90 Shore A
Compression Set	<20%
Protection Level	IP54 to IP67 equivalent
Installation Type	Snap-fit, adhesive-backed, or integrated
Operating Temperature	-30°C to 120°C

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 10243, DIN 648

Parent Products

This component is used in the following industrial products

Linear Guide Track

A precision mechanical component that provides smooth, low-friction linear motion along a fixed path.

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Engineering Analysis

Risks & Mitigation

Contamination ingress leading to premature bearing failure
Material degradation from incompatible chemicals
Improper installation causing seal leakage
Reduced effectiveness in high-speed applications

FMEA Triads

Trigger: Abrasive particles embedding in seal material
Failure: Accelerated wear on guide raceways and balls
Mitigation: Use multi-layer seals with external wipers; implement regular cleaning protocols

Trigger: Thermal expansion mismatch between seal and metal components
Failure: Loss of sealing contact at temperature extremes
Mitigation: Select materials with compatible thermal coefficients; design with expansion gaps

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5mm on critical dimensions per ISO 10243

Test Method

Contamination ingress testing per ISO 15242-4; compression set testing per ASTM D395

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

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Manufacturers of Sealing Strips

Manufacturer profiles associated with Sealing Strips.

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Frequently Asked Questions

How often should sealing strips be replaced on linear guides?