--- title: "65651-11329-108 — Piston | TEK Precision" description: "TEK Precision manufactures 65651-11329-108, Piston, for rotorcraft and fixed-wing platforms. ITAR compliant, quality audited. 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Certified scope: Machining and Assembly of Rotary Head and Fixed Wing Components for the Aerospace Industry.", "recognizedBy": { "@type": "Organization", "name": "Amtivo (USA) Inc." }, "validFrom": "2026-09-11", "expires": "2029-09-10" } }, { "@type": "WebSite", "@id": "https://tekprecision.com/#website", "url": "https://tekprecision.com/", "name": "TEK Precision", "publisher": { "@id": "https://tekprecision.com/#organization" }, "inLanguage": "en-US" } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://tekprecision.com/" }, { "@type": "ListItem", "position": 2, "name": "Parts", "item": "https://tekprecision.com/parts" }, { "@type": "ListItem", "position": 3, "name": "65651-11329-108", "item": "https://tekprecision.com/parts/65651-11329-108" } ] }, { "@context": "https://schema.org", "@type": "Product", "@id": "https://tekprecision.com/parts/65651-11329-108#product", "name": "65651-11329-108", "description": "Piston, manufactured by TEK Precision as a build-to-print aerospace component.", "sku": "65651-11329-108", "category": "Pistons & Plungers", "image": "https://tekprecision.com/__l5e/assets-v1/6af12cca-2d3b-49f4-a154-d2e78b19ba94/hydraulic-2.webp", "url": "https://tekprecision.com/parts/65651-11329-108", "manufacturer": { "@id": "https://tekprecision.com/#organization" } } ] --- [AS9100D / ISO 9001:2015 Certification](/__l5e/assets-v1/895c892f-6772-4012-88b5-1125b6569f1d/tek-as9100-certificate.pdf) [![TEK Precision](/assets/tek-logo-BRnrme0g.webp)](/) [Home](/)[Products](/products)[Parts](/parts)[Quality](/quality)[Facilities](/facilities)[Awards](/awards)[Customers](/customers)[Blog](/blog)[Contact](/contact)[Request a Quote](/contact) Parts Catalog # 65651-11329-108 Piston TEK Precision manufactures part number 65651-11329-108, Piston, as a build-to-print component for rotorcraft and fixed-wing platforms. Every part is produced to OEM specification with full traceability and first-article inspection. ## Specifications Part Number 65651-11329-108 Description Piston Component Type Pistons & Plungers ## Manufacturing Pistons, Plungers and Spool Components Pistons, plungers and spool components operate within hydraulic assemblies where dimensional stability under pressure and cycling determines whether the assembly holds its seal. TEK Precision turns these components on CNC turning centres including a Hitachi Seiki HT40 with 15-inch chuck and steady rest, and two Mori Seiki SL250 machines configured for 15-inch chuck work and for long-part work at 43 inches between centres. Finish grinding is performed on Tschudin cylindrical grinders capable of 0.000002 inch resolution, with surface finish verified by profilometer. Where a component forms part of a hydraulic assembly, TEK tests the completed unit in-house: test stands operate from 0 to 15 GPM with proof testing to 10,000 PSI, 3,500 PSI operating pressure and 3-micron filtration, using an automatic cycling device. An environmental chamber allows verification from minus 65°F to 500°F. Every unit ships with full test data traceable to the OEM specification. ![Representative photograph of two aerospace hydraulic actuator assemblies, one with an exposed polished chrome piston rod, produced by TEK Precision](/__l5e/assets-v1/6af12cca-2d3b-49f4-a154-d2e78b19ba94/hydraulic-2.webp) Representative pistons & plungers manufactured by TEK Precision. Not a photograph of part 65651-11329-108. [Request a Quote](/contact?part=65651-11329-108) [All Parts](/parts)[Hydraulic Assemblies](/products#hydraulic-assemblies) Credentials - ITAR Compliant - Independently Audited Quality Management System - Sikorsky SSQR / Procure 2-011 Certified - Northrop Grumman Preferred Source ## Related Pistons & Plungers - [61650-20288-101 Piston ](/parts/61650-20288-101) - [65105-11001-102 Plunger ](/parts/65105-11001-102) - [65251-08078-102 Piston ](/parts/65251-08078-102) - [65651-11368-102 Piston ](/parts/65651-11368-102) - [65652-03136-103 Piston ](/parts/65652-03136-103) - [65652-11124-102 Piston ](/parts/65652-11124-102) [![TEK Precision](/assets/tek-logo-BRnrme0g.webp)](/) World Class Aerospace Manufacturing — Build to Design TEK Precision Co., Ltd. is a world-class aerospace manufacturer producing mission-critical components for defense, commercial aviation, and space programs. AS9100D / ISO 9001:2015 Certified FAR-21 ITAR [](https://www.linkedin.com/company/tek-precision/) #### Navigate - [About](/about) - [Media](/media) - [Products](/products) - [Quality](/quality) - [Facilities](/facilities) - [The TEK Team](/team) - [Awards](/awards) - [Customers](/customers) - [Contact](/contact) - [Privacy Policy](/privacy-policy) - [Terms & Conditions](/terms-and-conditions) - [Cookie Policy](/cookie-policy) #### Headquarters - 205 West Industry Court Deer Park, NY 11729 - [(631) 242-0330](tel:+16312420330) - [teksales@tekprecision.com](mailto:teksales@tekprecision.com) © 2026 TEK Precision Co., Ltd. All Rights Reserved. Custom Website Design by [WebConsultants](https://webconsultants.co.za/) Engineered in the United States of America We use cookies to improve your experience on our site. See our [Cookie Policy](/cookie-policy) for details. DeclineAccept