1910.137(a)(1): Manufacture and marking of rubber insulating equipment
Key takeaways
- 1910.137(a)(1) is part of OSHA's general industry standards (29 CFR Part 1910, Subpart I).
- Related part: 1910.137(a) Design requirements for specific types of electrical protective equipment.
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What this rule covers
29 CFR 1910.137(a)(1) ("Manufacture and marking of rubber insulating equipment") is one requirement inside 1910.137 Electrical protective equipment, an OSHA general industry standard (Part 1910, Subpart I). It includes 13 sub-paragraphs. The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
(1) Manufacture and marking of rubber insulating equipment.
(i) Blankets, gloves, and sleeves shall be produced by a seamless process.
(ii) Each item shall be clearly marked as follows:
(A) Class 00 equipment shall be marked Class 00.
(B) Class 0 equipment shall be marked Class 0.
(C) Class 1 equipment shall be marked Class 1.
(D) Class 2 equipment shall be marked Class 2.
(E) Class 3 equipment shall be marked Class 3.
(F) Class 4 equipment shall be marked Class 4.
(G) Nonozone-resistant equipment shall be marked Type I.
(H) Ozone-resistant equipment shall be marked Type II.
(I) Other relevant markings, such as the manufacturer's identification and the size of the equipment, may also be provided.
(iii) Markings shall be nonconducting and shall be applied in such a manner as not to impair the insulating qualities of the equipment.
(iv) Markings on gloves shall be confined to the cuff portion of the glove.
Source: eCFR, text current as of 2026-10-15. Read all of 1910.137.
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OSHA interpretation letters
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Sources
- 29 CFR 1910.137 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.