OVAL RING GASKET

Precision Seal for High-Pressure Applications

Overview

Oval Ring Gaskets are a type of Ring Type Joint (RTJ) Gasket specifically designed with an oval cross-section. They are used in RTJ flanges where high pressure and temperature sealing is critical. These gaskets offer metal-to-metal sealing and deform slightly to match the flange grooves for a tight, leak-proof fit.

Key Features

Oval cross-section for RTJ flange compatibility
Metal-to-metal sealing integrity
Ideal for high pressure and high temperature
No need for sealing compounds or coatings
Manufactured to precise tolerances
Reusable in certain low-cycle applications

Material Options

Material & Service Area

Soft Iron: General applications up to 500°C
SS 304 / 316 / 316L: Pharma, Food, General Process Industries
Inconel 625 / 718: High-temperature, high-corrosion environments
Hastelloy C276: Acidic and harsh chemical environments
Monel 400: Seawater, oil and gas
Carbon Steel: Oil & Gas pipelines and refinery services

Optional coatings available: Zinc plating, Silver, PTFE

Technical Specifications

Type: Oval (RTJ Style R)
Standard Sizes: R11 to R105 (API & ASME)
Size Range: ½" to 24" Nominal Bore
Pressure Rating: Up to 10,000 psi (API 6A)
Temperature Range: -100°C to 1000°C (material-dependent)
Design Standard: ASME B16.20, API 6A, ANSI B16.5, ISO 7483

Dimensions

Oval Ring Gaskets are precision machined to fit the groove dimensions of RTJ flanges. Their deformation under compression ensures zero leak sealing.

Note: Oval gaskets have less sealing surface than octagonal ones but better groove conformity, making them ideal for softer or slightly damaged flanges.

Applications

Oil & Gas Pipelines
Petrochemical Plants
High-Pressure Steam Systems
Offshore Platforms
Refineries & Power Generation
High-Temperature Heat Exchangers

Frequently Asked Questions (FAQs)

Q: How is Oval Ring Gasket different from Octagonal?
A: Oval gaskets are rounded in cross-section, offering better sealing on older or worn flange grooves.
Octagonal gaskets have a better pressure-bearing surface but require more precise flange surface condition.

Q: Can it be reused?
A: Not recommended for high-pressure or critical systems. May be reused in low-risk environments with proper inspection.

Q: Are these gaskets interchangeable with Octagonal ones?
A: No. Each flange groove is specifically designed for either Oval or Octagonal rings. Always match type to flange spec.