Seat Surface: Temperature Range -50°C to 400°C

Component Specifications

Definition

The seat surface is a critical sealing interface within valve bodies and damper housings, typically machined to exact tolerances to create a hermetic seal when mated with a corresponding sealing element (such as a ball, disc, or plug). It directly influences system efficiency, pressure containment, and operational reliability by preventing fluid leakage and ensuring precise flow regulation.

Working Principle

The seat surface works by providing a smooth, durable mating surface that, when compressed against a sealing element, creates a tight seal to block or regulate fluid passage. In closed positions, it withstands system pressure to prevent leaks; during operation, it allows controlled flow with minimal turbulence or pressure drop.

Materials

Stainless steel (e.g., 316L, 17-4PH), brass, carbon steel, or engineered polymers (e.g., PTFE, PEEK) depending on application requirements for corrosion resistance, temperature tolerance, and wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Hardness	HRC 40-60 (metal seats)
Surface Finish	Ra 0.4-1.6 μm
Pressure Rating	Up to 6000 psi
Temperature Range	-50°C to 400°C
Flatness Tolerance	≤ 0.025 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 5208, DIN EN 12266-1, API 598

Parent Products

This component is used in the following industrial products

Valve Body / Damper Housing

The main structural enclosure that contains and supports the internal components of an isolation valve or damper.

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Engineering Analysis

Risks & Mitigation

Seal failure leading to leaks
Reduced system efficiency
Contamination from worn particles
Increased maintenance costs

FMEA Triads

Trigger: Improper material selection for corrosive fluids
Failure: Pitting and erosion of seat surface
Mitigation: Use corrosion-resistant alloys or coatings; implement fluid compatibility testing

Trigger: Insufficient surface finish or flatness
Failure: Incomplete sealing and fluid leakage
Mitigation: Adhere to machining tolerances; perform post-machining lapping or grinding

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.01 mm for critical dimensions; surface finish within Ra 0.4-1.6 μm

Test Method

Hydrostatic/pneumatic testing per ISO 5208; helium leak detection for high-integrity applications

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 Seat Surface

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.

Dongguan Xinbao Instrument Co., Ltd.

Guangdong, CN

Also makes: Environmental Test Chamber, Environmental Chamber, Vibration Table and 5 more

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

Listed there as: “Chair Seat Surface Impact Tester”
View source page ↗ ots-technik.com · checked 2026-08-30

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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 seat surface wear in valves?

Common causes include abrasive particles in fluid, corrosion, cavitation, thermal cycling, and improper mating with sealing elements. Regular inspection and using compatible materials can mitigate wear.

How is seat surface flatness measured?

Flatness is typically verified using optical flats, coordinate measuring machines (CMM), or surface plates with feeler gauges, ensuring compliance with tolerance 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.

Seat Surface