Asbestos Products Used On Navy Escort Carriers

Identifying Historical Products on Escort Carriers

A product list is a starting point for researching the specific CVE and service period, not proof that every vessel installed every listed material. The How Exposure Occurred During Navy Service On Escort Carriers page provides another way to check the specific material, task, or location discussed here.

The correct product must be linked to a hull, component, supplier when known, repair, and veteran’s actual work. Separate original construction from later shipyard substitutions.

For chronology, read History Of Asbestos Use On Navy Escort Carriers.

The term product can refer to a thermal covering, a consumable gasket, a valve’s packing, or a separate aircraft part. Their makers and installation dates can differ, even aboard the same CVE. Begin with the sailor’s ship and work area, then identify the product alleged to have been disturbed. A general Navy inventory cannot stand in for an installation record on the target hull. Keep each candidate on its own row rather than writing a single blanket list of asbestos aboard.

This product page should answer what a particular item was made of. The historical timeline page answers when it was installed or replaced. Both are needed when a veteran recalls a repair. A composition source for a gasket used on a different ship, or an installation record dated after the tour, cannot establish personal contact on this CVE.

For related Navy exposure research, review Articles About Asbestos On Navy Escort Carriers.

Pipe and Equipment Insulation

Thermal insulation or lagging on particular hot systems may be relevant when period records identify asbestos. A covering near a boiler or steam line is distinct from a seal inside connected equipment. The Where Asbestos Was Located On Escort Carriers page provides another way to check the specific material, task, or location discussed here.

The National Archives asbestos guide identifies ship engineering drawings including S39 insulation and lagging and S48 piping categories. A drawing can show design without proving later installation.

Do not identify a white or fibrous covering by appearance, and never disturb suspected material for evidence.

A lagging drawing might show where an insulated pipe was intended, but a later yard package may document replacement on only one segment. A witness’s description of white wrap is not enough to identify asbestos. Record the pipe system, compartment, specification number, and date of installation or removal if available. The manufacturer of a pump inside the same room is not automatically responsible for covering placed on adjacent piping by an insulation crew.

For a lagging claim, write down the exact pipe, equipment, or compartment rather than only the word “insulation.” A construction drawing may call out a covering, while a later work order could show it was removed before the sailor served. Conversely, a replacement may have been installed during the tour. The chronology affects what material was actually disturbed. Keep a source citation for each version.

For related Navy exposure research, review Navy Electrical Equipment Asbestos Exposure.

Gaskets and Flange Materials

Some historical gasket specifications contained asbestos. A pump casing, valve bonnet, flange, or other joint may use a different material, part number, and supplier.

NAVSEA’s released files identify historical product types but cannot establish use on every CVE. Match the specification revision to the actual equipment and service dates.

A new gasket documented on a repair invoice does not necessarily identify the old gasket removed beforehand.

A pump casing gasket can be a different item from a valve bonnet gasket or a flange gasket a short distance away. Match the material grade, part number, equipment model, and repair date. An approved asbestos-containing gasket option in a historical NAVSEA file does not establish that the ship purchased it. A new-part box may identify the replacement installed after the alleged contact but not necessarily the old material removed at the beginning of the job.

One shipboard overhaul can use many gasket sizes and materials. A historical Navy specification for a boiler flange may not apply to a pump cover or an aircraft component. Use the equipment manual to identify the correct joint, then compare the part number to a dated requisition. A supplier on a later invoice should not be assigned to a gasket removed years earlier without supporting records.

If a storeroom sheet identifies a gasket grade, check whether it was issued for the same pump or valve shown in the repair order. A ship may stock several compatible products. An approved list can narrow a search but should not be represented as a record of which one the mechanic removed. Keep old and replacement materials on separate lines.

For related Navy exposure research, review Asbestos Exposure On Navy Escort Carriers.

Valve and Pump Packing

Packing can seal valve stems or rotating equipment. Formulations vary, and a component can be repacked repeatedly during a ship’s service.

A valve maker’s nameplate does not establish who produced a later packing replacement. Record the part and supplier separately.

Differentiate repacking from routine operation and from nearby insulation removal.

Packing can be renewed multiple times during one equipment’s service. The valve body might bear its original maker’s name while later packing came from a separate yard supplier. A maintenance order reading “repack valve” can locate the task, but may omit composition. Seek a parts requisition or period technical manual for the exact seal. Distinguish the sailor who extracted old rings from one who tested the valve after reassembly.

A witness may recall repacking a valve but not remember the fiber or brand of the old rings. Their observation can still identify the job and people present. A technical manual may provide material options, while a parts order can narrow what was supplied. If the source only documents new packing, retain uncertainty about the removed material. Do not transform a repair description into a measured fiber concentration.

For related Navy exposure research, review Navy Escort Carrier Personnel With Asbestos Exposure.

Aircraft and Deck Equipment Products

An escort carrier operated aircraft, but aircraft components require aircraft-specific product records. Do not transfer shipboard gasket or insulation specifications to aircraft brakes, engines, or deck equipment without identifying the exact part.

A maintenance manual and part number can help investigate what a particular aviation sailor handled. The aircraft model and period matter.

Not all heat-resistant or friction materials contained asbestos, and flight-deck duty alone is not product identification.

CVE aviation duties should not be converted into a claim about every aircraft brake or protective material. An aircraft model, manufacturer, and part revision are needed to investigate a specific component. A sailor responsible for deck handling may not have opened that component. The landing-gear or engine part also needs to be kept separate from shipboard thermal insulation. If several aircraft types served aboard during a tour, tie the task to the correct one.

Aircraft maintenance records can change with model and deployment. A CVE may embark more than one aircraft type over time, and the veteran’s duty may involve only one. State the aircraft and part, then check whether the veteran actually serviced it. A generic aircraft asbestos claim is weaker than a model-specific work order and composition evidence. Shipboard maintenance on propulsion needs its own separate chain of proof.

Aviation and shipboard supplies can both be held in a carrier’s storeroom. An inventory showing asbestos-containing shipboard gasket stock cannot prove that a particular aircraft part used it. Verify the equipment code and model. Likewise, a documented aircraft brake part cannot establish the covering installed on a steam line elsewhere aboard the CVE.

Original Makers and Replacement Suppliers

A CVE may carry a machine from one maker, a replacement gasket from another, and insulation purchased through a yard. List each item, manufacturer if documented, installation date, and removal date.

A qualified-products list shows permitted suppliers, while a purchase order and work package may more closely identify use on the target hull. These documents answer different questions.

Leave supplier unknown when the surviving record does not identify it.

A Navy qualified-products list identifies permitted suppliers for a specification, while a purchase record narrows what was procured. Installation and removal records answer additional questions. A supplier’s appearance in an approved list is not proof of use on every escort carrier or the veteran’s contact. Keep the original equipment maker, replacement-parts seller, insulation installer, and any later contractor distinct. If one identity remains unknown, state that rather than choosing a familiar company name.

An insulation installer may appear in a yard contract while the actual manufacturer of the insulating material is identified only in a separate purchase file. A Navy stock number can sometimes help connect records, but it must be verified for the relevant date. Do not treat every company listed on a qualified-products list as having supplied the target hull. Record each company’s role and identify what remains unknown.

Link Product to Individual Service

Collect ship name and hull, service assignments, equipment drawings, dated material specifications, work orders, witnesses, and medical records. A product document alone does not show who handled it.

VA considers a health condition caused by military asbestos contact. Civil or trust filings can require separate supplier and deadline evidence.

Provide a clinician all military, civilian, and household exposure history.

See Navy Records Documentation For Asbestos Exposure.

A service file places a sailor aboard a CVE, while a dated work order identifies a job and a specification describes possible material. A firsthand statement may connect the person to the removal. No document necessarily does all of this. Build a dated source table with hull, compartment, part, supplier if known, and worker’s role. If the part is identified but the sailor’s presence is not, mark the personal link unresolved.

If a product source refers to a ship class rather than the individual CVE, mark it “class-level lead.” Seek ship-specific purchase and alteration records before treating it as installed. An archived drawing for another hull may help formulate a request but does not establish this sailor’s contact. The service and medical records are necessary for a health or benefits review and should not be replaced by a broad materials list.

Frequently Asked Questions

Did every CVE use the same asbestos products?

No. Installation and replacement histories varied.

Were all gaskets asbestos-containing?

No. Check the actual part.

Does an aircraft job prove asbestos exposure?

No. Identify a specific product and task.

Can a machine nameplate identify later packing?

Not necessarily. Suppliers may differ.

Does a catalog prove installation?

No. Match procurement and ship records.

Should old material be sampled personally?

No. Leave it undisturbed.

Can a part be identified from its color alone?

No. Use reliable composition evidence.

Does a new replacement prove the removed product?

No. Check earlier part and repair history.

Review Your Navy Service History

Identify the named Navy vessel or installation, service dates, duties, material or component, maintenance event, and available witnesses. Keep military and later civilian work histories distinct.

Call 800.291.0963 for a no-obligation case review, or submit your case here. For medical decisions, speak with a qualified clinician; for VA claims, consider a VA-accredited representative.

Keep the original records and label uncertain details. A vessel, rating, or diagnosis alone cannot determine a specific claim outcome.

Summary and Product Review

Research every candidate material as a separate part on the correct hull and date. Link its disturbance to the veteran’s work and label any unknown supplier or replacement history.

A product-centered guide should resist treating all shipboard heat-resistant materials as asbestos. Some products changed composition during wartime and later maintenance. When older material remains in a current vessel or museum, do not sample it personally. Use official records and qualified professionals. Health care and potential VA or product-based claims depend on a complete individual history, not a generic list of items once permitted for Navy purchase.

The best final product table may contain only a few well-documented parts. That is more useful than a large list assembled from unrelated naval specifications. Where a product is identified, say whether the sailor removed it, worked nearby during removal, or only occupied the space during ordinary operations. Each is a different exposure account that a qualified professional may assess.

Medical or legal review may require facts beyond this product list: the veteran’s duty, the duration and circumstances of the work, diagnosis, and applicable claims rules. A list of possible suppliers is not a defendant list. Present only documented identities and describe missing purchase or installation evidence before drawing a product-specific conclusion.

Confirmed Sources

• National Archives — Researching Asbestos Aboard U.S. Naval Vessels
• NAVSEA — Asbestos Reading Room
• VA — Veterans Asbestos Exposure
• NCI — Asbestos Exposure and Cancer Risk
• Naval History — USS Casablanca (CVE-55)

Disclaimer: General information only—not legal or medical advice. This website is not a law firm. Exposure, VA eligibility, liability and deadlines vary by case and jurisdiction. Do not disturb suspected asbestos. Past results do not guarantee future outcomes.