Aerospace & Defense Industry Brief
For design engineers, supplier-quality engineers and buyers on aerospace and defense programs where material qualification and lot traceability must survive converting.
A converted part is easy to cut and easy to disqualify: cite the wrong revision, lose the lot trace, or substitute the material, and the geometry no longer matters. This brief covers environmental sealing, QPL EMI shielding, thermal and electrical insulation, and masking and assembly — with the converter’s role defined as preserving the qualification chain while making the part repeatable. H-O is an ISO 9001:2015 certified organization; where a program requires a registration H-O does not hold — such as AS9100D or NADCAP — that is stated directly. Skip to the quote form →
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Download the 8-page industry brief
Sealing, QPL shielding, insulation and masking with requirements traceability preserved through converting.
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Send a drawing, application photo or written description and engineering reviews it the same business day — materials starting points, tolerance windows and documentation defined with the part.
Skip to the quote form →Get the 8-page industry brief
8-page engineering brief on converted sealing, QPL shielding, insulation and masking for aerospace and defense — with requirements traceability preserved through converting.
Key topics covered
- Fluorosilicone for fuel and hydraulic interfaces; silicone across −55 to +200 °C
- QPL conductive elastomers per MIL-DTL-83528-class requirements, Type selected for flange metal
- Specification revision, Type and source cited on the drawing and preserved lot to lot
- Thermal and dielectric insulation for avionics and high-voltage zones — from Nomex®, polyimide film and mica to Blueshift AeroZero® polyimide-aerogel film, whose acrylic-adhesive grades publish ASTM E595 outgassing data for space and optics-adjacent hardware
- High-temperature masking that survives cure and pulls clean
- First articles in AS9102 format with dimensional inspection reports
Before you send the RFQ
How does qualification evidence survive converting?›
The drawing cites the specification revision, Type and QPL source; the converter preserves them lot to lot with two-way traceability from raw roll to shipped lot, and ships certificates with each lot. The geometry is cut at the converter; the qualification arrives with the material and must leave with the part.
Is H-O AS9100 certified?›
No. H-O is an ISO 9001:2015 certified organization and supplies first-article documentation aligned with the AS9102 form structure, PPAP-style packages, and lot traceability. Where a program requires AS9100D, NADCAP or an active ITAR registration, H-O states directly that it does not currently hold them — so your supplier file is accurate from day one.
When is fluorosilicone required instead of silicone?›
Wherever fuel or hydraulic fluid contacts the seal. Standard silicone swells in hydrocarbon exposure; fluorosilicone holds. Elsewhere, silicone constructions cover the −55 to +200 °C envelope. The brief’s verification lists separate temperature, fluid exposure and compression.
How is an EMI gasket Type selected under MIL-DTL-83528?›
By flange metal and environment: the conductive filler must be galvanically compatible with the mating surface, and the elastomer must survive the exposure. Type is confirmed at drawing review against the specification, and the galvanic compatibility chart gives a first read on filler-to-flange pairing.
See also: related H-O pages
The application, material and capability pages behind this document — material selection, failure modes and converter-side process detail for each family.
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Send a drawing, application photo, or written description. Engineering reviews same business day.