Valve Seat & Seal: Temperature Range -40°C to +150°C

Q: What causes valve seat and seal failure in solenoid cartridges?

Common causes include abrasive contamination, chemical degradation of elastomers, excessive temperature beyond material limits, improper installation causing extrusion, and fatigue from cyclic pressure loading.

Q: How do I select the right seal material for my application?

Consider fluid compatibility (hydraulic oil, water, chemicals), temperature range, pressure requirements, and dynamic vs. static sealing conditions. NBR for general hydraulic oil, FKM for high temperatures and chemicals, EPDM for water glycol fluids.

Component Specifications

Definition

A critical sealing component in solenoid valve cartridges consisting of a precisely machined seat surface and elastomeric or metallic seal that creates a hermetic barrier between valve ports. It prevents internal and external leakage while withstanding high pressure differentials, temperature variations, and chemical exposure in hydraulic and pneumatic systems.

Working Principle

Creates a pressure-tight seal through mechanical compression or elastomeric deformation when the valve spool or poppet contacts the seat surface, blocking fluid passage. During valve actuation, the seal disengages to allow controlled fluid flow through designated ports.

Materials

Seat: Stainless steel (AISI 304/316), brass, or engineered polymers. Seal: Nitrile rubber (NBR), fluorocarbon (FKM/Viton), ethylene propylene diene monomer (EPDM), polyurethane (PU), or polytetrafluoroethylene (PTFE) for chemical resistance. Hardened steel or ceramic for high-wear applications.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Leakage Rate	<0.1 ml/min at rated pressure
Seal Hardness	70-90 Shore A
Surface Finish	Ra 0.4 μm or better
Pressure Rating	Up to 350 bar
Temperature Range	-40°C to +150°C
Flatness Tolerance	≤0.01 mm

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 5598, ISO 17282, DIN 24342, DIN 24300

Parent Products

This component is used in the following industrial products

Solenoid Valve Cartridge

A compact, replaceable solenoid-operated valve unit designed for integration into a control valve manifold.

View Product Details

Engineering Analysis

Risks & Mitigation

Seal extrusion under high pressure
Chemical incompatibility causing swelling/cracking
Abrasive wear from contaminated fluid
Thermal degradation exceeding material limits
Improper installation damage

FMEA Triads

Trigger: Contaminated fluid with particulate matter
Failure: Abrasive wear on seat surface leading to increased leakage
Mitigation: Install filtration systems (10 μm or finer), use wear-resistant materials like hardened steel or ceramics, implement regular fluid analysis

Trigger: Temperature exceeding elastomer limits
Failure: Seal hardening and loss of elasticity causing leakage
Mitigation: Select high-temperature materials (FKM, FFKM), install cooling systems, monitor operating temperatures with sensors

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerances per ISO 286, surface finish per ISO 1302, material certifications per ISO 10474

Test Method

Pressure decay test per ISO 9978, helium leak test for critical applications, cyclic endurance testing per ISO 19973

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 Valve Seat & Seal

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

JST Seals

Guangzhou, Guangdong, CN

Also makes: Hydraulic Cylinder, Hydraulic Piston, Piston Rod & Seal and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “High pressure ball valve seat seal”
View source page ↗ jst-seals.com · checked 2026-09-03

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What causes valve seat and seal failure in solenoid cartridges?