Seat / Seal Ring: Temperature Range -20°C to 140°C, ID 8-35 mm

Component Specifications

Definition

The Seat/Seal Ring is a precision-engineered sealing element within aseptic filling valve assemblies, designed to create a hermetic seal between moving parts during filling operations. It prevents microbial ingress, maintains sterility of the product stream, and controls fluid flow with minimal particulate generation in hygienic processing environments.

Working Principle

Operates through elastic deformation under controlled compression to form a leak-tight barrier between valve seat surfaces, preventing fluid escape and external contamination while allowing precise valve actuation.

Materials

FDA-compliant elastomers (EPDM, Silicone, FKM/Viton) or PTFE-based compounds; hardness 70-90 Shore A; suitable for CIP/SIP processes up to 140°C.

Technical Parameters

Parameter	Typical range	Notes & selection driver
ID	8-35 mm
OD	15-50 mm
Thickness	2-6 mm
Surface Finish	Ra ≤ 0.8 μm
Pressure Rating	Up to 10 bar
Temperature Range	-20°C to 140°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 2852, DIN 11864, 3-A Sanitary Standards

Parent Products

This component is used in the following industrial products

Aseptic Filling Valve Assembly

A critical assembly that precisely controls the flow of hot, sterile beverage into bottles while maintaining aseptic conditions during the filling process.

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Engineering Analysis

Risks & Mitigation

Microbial contamination due to seal failure
Product leakage causing production downtime
Particulate generation from seal degradation
Incorrect installation leading to seal extrusion

FMEA Triads

Trigger: Material fatigue from repeated compression cycles
Failure: Loss of sealing force leading to leakage
Mitigation: Implement preventive replacement schedules and use materials with low compression set

Trigger: Chemical attack from cleaning agents
Failure: Seal swelling or cracking compromising sterility
Mitigation: Select chemically compatible materials and validate cleaning protocols

Industrial Ecosystem

Compatible With

Krones, KHS, Sidel, Serac, Tetra Pak aseptic filling machines

Typical Suppliers & Equivalents

Parker Hannifin, Trelleborg, Saint-Gobain, Freudenberg Sealing Technologies

Compliance & Inspection

Tolerance

±0.1 mm on critical dimensions, surface defects ≤ 0.05 mm

Test Method

Helium leak testing per ASTM F328, compression set testing per ASTM D395, extractables testing per USP <661>

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.

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Manufacturers of Seat / Seal Ring

Manufacturer profiles associated with Seat / Seal Ring.

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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

Related Components

Rejection Diverter

A mechanical or pneumatic device that redirects underfilled or overfilled beverage containers from the production line to a rejection area in automated filling verification systems.

Port Flanges

Precision-machined flanges for connecting beverage metering pump heads to piping systems with leak-proof seals.

Valve Stem and Seat

Precision sealing component for aseptic filling valves that controls sterile product flow in beverage manufacturing.

Orienting Rails/Guides

Precision alignment components that guide and orient bottles in unscrambling systems for proper positioning.

Frequently Asked Questions

How often should Seat/Seal Rings be replaced in aseptic filling systems?

Replacement intervals depend on operational cycles and CIP/SIP frequency, typically every 3-6 months or 10,000-50,000 cycles. Regular inspection for compression set, cracks, or surface degradation is recommended.

What material is best for Seat/Seal Rings in acidic beverage applications?

FKM/Viton offers superior chemical resistance for acidic products, while EPDM is suitable for alkaline environments. Material selection must consider pH, temperature, and cleaning agents.

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 / Seal Ring