Our Elastomer seal works in the various hydraulic and pneumatic systems to be sealed perfectly,
it comes in a variety of sizes and configurations that meets customer’s requirements

Thread Seal Washer
- Parker 750 Series Equivalent Thread Seal Washer
Roman Seal manufactures high-performance Thread Seal Washers equivalent to Parker 750 Series sealing products for aerospace, military, hydraulic, pneumatic, and industrial applications.
These thread sealing products are designed to provide reliable sealing performance in high-pressure threaded connections, preventing fluid leakage under vibration, pressure cycling, and extreme operating conditions.
Applications
Aerospace hydraulic systems, military equipment, hydraulic manifolds, valves, pumps, fuel systems, pneumatic systems, and industrial fluid control systems.
Product Description
Thread Seal Washer is a mechanical sealing washer consisting of a precision metal retainer combined with a bonded rubber sealing element. It is designed to create a reliable seal under the head of a bolt or threaded fastener.
Unlike chemical sealants, this product operates as a mechanical sealing solution without curing time, allowing fast installation, easy removal, and consistent sealing performance.
Roman Seal thread seal washers are designed as an equivalent to Parker 750 Series sealing products used in high-pressure hydraulic and aerospace applications.
Key Features and Benefits
* Equivalent to Parker 750 Series thread seal washers
* High-pressure leak prevention performance
* Excellent vibration resistance
* Mechanical sealing without chemical curing
* Easy installation and removal
* Reusable and durable design
* Self-centering structure for consistent assembly
* Suitable for hydraulic and pneumatic systems
* Stable sealing under pressure and thermal cycling
Materials Available
* NBR (Nitrile Rubber)
* FKM (Viton® equivalent)
* EPDM
* Silicone
* Fluorosilicone
* ETC
Specifications
* Available in multiple sizes and material combinations
* Designed for aerospace, military, hydraulic, and industrial sealing applications
* Suitable for high-pressure threaded fastener sealing systems
Certifications
Roman Seal is an AS9100 and NADCAP certified manufacturer specializing in aerospace sealing products, hydraulic sealing components, and rubber-to-metal bonded sealing solutions.
All products are manufactured under strict quality control standards to ensure consistent sealing performance and long-term reliability.
Custom Manufacturing
We offer custom sizes, materials, and specifications to meet customer requirements for aerospace, defense, hydraulic, and industrial sealing applications.
Contact Roman Seal for technical support or RFQ for Parker 750 Series equivalent thread seal washers.

Parker is a registered trademark of Parker Hannifin.
Roman Seal is not affiliated with Parker Hannifin.

