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How to Spec an Aircraft Anti-Chafe or Wear Part: What to Send H-O for a Quote
The fastest way to a useful wear-part quote is to describe the interface, not just ask for a material. A wear or interface part is defined as much by the joint around it, the load it carries and whether dissimilar metals meet there, as by the material itself. Here is the short list of facts that move an anti-chafe, wear, spacer, or isolation part from a vague request to a real, manufacturable scope, and what our engineering team does with each one.
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The nine facts to send, and what each one decides
A wear or interface part is defined as much by the joint around it as by the material, so a useful quote starts with the interface. The nine facts below are what our applications engineering team needs to recommend a family and convert it accurately. The first three define the mechanical and electrical job; the rest set the environment, the attachment, and the manufacturing. Send what you have and we will flag what is open.
- The interface job. Anti-chafe protection, sliding wear, a load-bearing structural spacer, or galvanic isolation, since these point at completely different families. Many parts do two of these at once; say so.
- Whether the joint carries a structural load. A clamped or bolted load rules out soft films and points at a rigid laminate or bearing-grade material that will not extrude under preload.
- Whether dissimilar metals meet at the joint. If so, the part has a dielectric job, and we will steer toward an insulating laminate, shim, or UHMW strip. Tell us which two materials meet.
- Motion and contact. Sliding, rotating, or vibration-driven micro-motion, and the contact pressure, which decide between UHMW, PTFE, PTFE-coated fiberglass, and bearing-grade.
- Temperature range. Continuous and peak temperature, since PTFE and coated fiberglass extend the range where UHMW would soften.
- Environment. Exposure to fuels, hydraulic fluid, cleaning agents, ozone, or moisture, which can rule a family in or out and affects the corrosion picture.
- Fire and dielectric requirements. Any UL 94 flammability class or dielectric-strength (ASTM D149) requirement your program expects on the TDS.
- Attachment and tolerance. Pressure-sensitive adhesive, mechanical fastening, or a machined fit, and the dimensional tolerance the spacer or strip must hold.
- Geometry. A drawing or DXF is ideal; a dimensioned sketch starts a quote; an existing worn part we can measure and reverse-engineer works too.
From Request to Converted Part
| What you send | What it decides |
|---|---|
| Interface job | Anti-chafe vs slide vs structural spacer vs isolation: the family |
| Structural load / dissimilar metals | Rigid laminate vs film, and whether a dielectric job is present |
| Motion and contact pressure | UHMW vs PTFE vs coated fiberglass vs bearing-grade |
| Temperature and environment | Grade range and fluid compatibility |
| Fire / dielectric requirement | UL 94 class and ASTM D149 dielectric on the TDS |
| Attachment, tolerance, geometry | The converting method: die-cut, waterjet, machine, laminate, kit |
Qualitative guidance only; confirm grades on their current technical data sheets. Material choice does not by itself constitute corrosion protection.
What engineering does with the list
With the interface job and load defined, we shortlist a family: UHMW-PE or PTFE-coated fiberglass for anti-chafe and sliding wear, G-10 and FR-4 or Durostone for structural spacers and isolators, Atlas bearing-grade for load-bearing slides, and aramid for thin dielectric shims. Motion and temperature narrow the grade, the dissimilar-metal question confirms the dielectric requirement, and the tolerance and attachment set the converting method. The output is a family-and-grade direction plus a converted-part quote, not a corrosion-protection finding.
What happens after you send it
We confirm the family-and-grade direction and the converting approach, quote the converted part to your drawing, and flag open questions, such as an undefined tolerance or a missing dissimilar-metal detail. For common configurations on materials we keep on hand, samples typically ship in three to five business days; standard production runs about two weeks after drawing approval, with expedited service available.
Machined laminate spacers carry their dimensional inspection, and every order carries the maker's TDS for the grade and lot under our ISO 9001:2015 certified quality management system.
The mistakes this checklist prevents
The list heads off the costly failures. Without the load information, a soft film can be specified where it will extrude under bolt preload. Without the dissimilar-metal detail, a wear strip can be chosen that protects against chafe but leaves a galvanic couple intact. Without the temperature, a UHMW part can be placed where PTFE-coated fiberglass was needed. And without the tolerance, a structural spacer can be quoted that does not hold its fit. Nine facts up front replace several rounds of revision.
Frequently asked questions
What is the most important thing to tell H-O about a wear part?
The interface job and whether the joint carries a structural load. Those decide whether the part is a soft anti-chafe strip, a low-friction slide, a rigid load-bearing spacer, or a dielectric isolator, which point at completely different families. Add whether dissimilar metals meet at the joint and we can name a family direction quickly.
Do I need a full drawing, or is a sketch enough?
A drawing or DXF is ideal for machined spacers that must hold tolerance, but a dimensioned sketch starts a quote, and we can measure and reverse-engineer an existing worn part. What we need early is the interface job, the load, the motion, and whether dissimilar metals meet, since those define the part before the geometry is final.
Can H-O reverse-engineer a worn liner or wear strip?
Yes. Send the worn part and any drawing, and we will measure the geometry and identify a family and grade direction that matches its duty, whether anti-chafe, sliding wear, structural spacer, or isolation. We confirm the converting method and quote the converted part; the corrosion and structural judgments remain with your program.
How should anti-chafe parts be attached?
It depends on the interface. Many anti-chafe strips use a pressure-sensitive adhesive backing; sliding-wear faces and structural spacers are often mechanically captured or fastened so the adhesive is not the load path. Tell us the attachment you prefer and any constraints, and we will convert the part with the right backing or fastening provision.
How fast can I get wear-part samples?
For common die-cut and waterjet configurations on materials we keep on hand, samples typically ship in three to five business days. Machined laminate spacers and bearing-grade parts depend on the geometry and tolerance. Standard production runs about two weeks after drawing approval, with expedited service available; confirm specifics with your quote.
Send the interface, get a wear-part quote
Send the interface job, the load, whether dissimilar metals meet, the motion and temperature, and whatever geometry you have, and we will recommend a family and quote converted parts to your drawing.
Samples typically ship in 3 to 5 business days for common die-cut configurations on materials we keep on hand; standard production runs about two weeks after drawing approval; expedited service is available. MOQ varies by material and part.
Family-owned in Winsted, Connecticut since 1971 · ISO 9001:2015 certified · OEMs worldwide send us a drawing — and get back their part.
Related reading
GuideUHMW, PTFE, or Glass-Epoxy Laminate: Selecting Aircraft Anti-Chafe and Wear MaterialsRead →
GuideGalvanic Corrosion at Dissimilar-Metal and Chafe Interfaces: MIL-STD-889 and How an Isolation Strip Breaks the CoupleRead →
ApplicationWear & Structural InterfaceRead →
IndustryAerospace, Defense & Space hubRead →
Request a quote for your anti-chafe & wear interface part
Send H-O your drawing or describe the part—engineering reviews every RFQ and converts samples on your geometry.
Last updated · Reviewed by H-O Products engineering (ISO 9001:2015 certified converter, Winsted, CT).
References
- ASTM D149 (dielectric strength of solid insulating materials); AMS 3662 (UHMW-PE sheet, by designation); MIL-STD-889 (dissimilar metals), cited qualitatively.
- ASTM D3330 (peel adhesion); UL 94 (flammability classes, per grade TDS). Cited by designation; H-O makes no corrosion-protection determinations.
- Manufacturer technical data sheets: UHMW-PE film and wear strip, PTFE-coated fiberglass 6085 series, virgin skived PTFE film, Atlas bearing-grade, G-10 / FR-4 and Durostone laminates, Nomex aramid paper, crosslinked polyethylene foam.
This article summarizes anti-chafe, wear, and structural-interface material principles using the families and designations cited on the parent application page. Comparisons are qualitative; mechanical and dielectric values are per each grade's current technical data sheet, and no test results are quoted.
MIL-STD-889 and AMS designations are named for orientation only; H-O makes no galvanic-compatibility, corrosion-protection, or airworthiness determinations. All parts are custom manufactured to order; minimum production run quantities vary by material and part. H-O is a converter, not a raw-material producer.