CarCareTruth Score
Mediocre, but wear gloves and ventilate.
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Prices may varyThe manufacturer's Safety Data Sheet classifies this product with one or more GHS Category 1 health hazards — the most severe tier. The hazard statements in quotes below are the verbatim GHS language from the SDS, as required by OSHA's Hazard Communication Standard. The line under each statement translates the GHS classification into plain language.
GHS Category 1 germ-cell mutagenicity — classified as suspected of causing heritable genetic damage.
GHS Category 1 carcinogenicity — classified as suspected of causing cancer with repeated or prolonged exposure.
If swallowed, inhaled, or splashed in eyes:
Call Poison Control immediately at 1-800-222-1222 (US, 24/7, free) and have the product container with you. Poison Control's standing guidance is to not induce vomiting after chemical exposure; they will direct first-aid steps based on the specific product.
About this product's hazards. This product's Safety Data Sheet uses signal word danger. Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate the manufacturer's safety sheet. They do not replace the SDS or substitute for a hazard assessment specific to your task.
Health score is for adult use as intended, per the manufacturer's SDS. It does not model child ingestion, accidental spill cleanup, or off-label use. See the safety panel below for full hazard classification, and /disclaimer for the full editorial scope.
GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
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From the manufacturer’s Safety Data Sheet, Section 8
“DANGER signal word is driven by health hazard codes · germ-cell mutagenicity Cat 1B, carcinogenicity Cat 1B, STOT RE Cat 1 · and SDS Section 8 prescribes a full-facepiece respirator that doubles as eye protection. Eye irritation Cat 2B is also classified at the mixture level.”
— Liquid Wrench
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
ANSI Z87.1 (incorporated via §1910.6)
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“SDS Section 8 prescribes chemical-resistant gloves and an impervious apron · the carrier is 80·<100% petroleum distillate and skin irritation is classified at the mixture level.”
— Liquid Wrench
U.S. regulatory standard
29 CFR 1910.138(a)
“appropriate hand protection when employees' hands are exposed to hazards such as those from… chemicals which produce an adverse effect on the skin or eyes…”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“SDS Section 8 prescribes a chemical respirator with organic vapor cartridge and full facepiece · not boilerplate. The petroleum-distillate carrier plus germ-cell mutagenicity, carcinogenicity, and prolonged-exposure organ damage classifications drive the inhalation hazard.”
— Liquid Wrench
U.S. regulatory standard
29 CFR 1910.1000; 1910.1200
“Each employer shall assure that no employee is exposed to an inhalation concentration of any substance shown in Tables Z-1, Z-2, or Z-3 in excess of the limits in the tables.”
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
The published Safety Data Sheet for this product does not specify ventilation protection for consumer use.
Workplace context
29 CFR 1910.134(a); 1910.1000
“the primary objective shall be to prevent atmospheric contamination [via] accepted engineering control measures (for example, enclosure or confinement of the operation, general and local ventilation…).”
Triggered by GHS H336 on the SDS.
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
This product ranks #7 of 7 in Silicone Lubricant.Three above it ↓
Last reviewed May 26, 2026
TL;DR DANGER-rated aerosol with a confirmed Prop 65 warning, germ-cell mutagenicity and carcinogenicity classifications from the petroleum-distillate carrier, and an SDS-prescribed full-facepiece respirator · health 1.0, floor-bound. The product itself works, well-reviewed by owners for stopping squeaks on door seals, hinges, and rubber-metal squeak points. Cleaner silicone sprays exist with similar performance.
Liquid Wrench Silicone Spray lubricates rubber seals, weatherstripping, hinges, and rubber-metal squeak points · community owners report stopping garage-door-pulley noise for months, silencing snowblower augers, and quieting leaf-spring squeak. Standard wide-fan aerosol button, no straw or directional nozzle; a lot comes out per spray on tight jobs, so overspray is a real risk. Keep it off painted panels and any surface that may need bodywork or adhesive bonding · silicone residue prevents primer and paint from sticking.
Car owners and homeowners with squeaky door seals, sticking window tracks, binding weatherstripping, or rubber-metal squeak points. Skip it for metal-on-metal contact (hinges under load, fasteners, chains) · use white lithium grease. Never apply near brake components. Given the chemistry below, consider a cleaner silicone-only formula if you spray frequently or work in an enclosed garage · performance is similar, the carrier is not.
DANGER signal word is driven by health-tier classifications: germ-cell mutagenicity Category 1B ("may cause genetic defects"), carcinogenicity Category 1B ("may cause cancer"), and prolonged-exposure organ damage Category 1. Suspected reproductive toxicity Category 2 is also classified. Prop 65 is confirmed in SDS Section 15 · cumene and ethylbenzene are listed California carcinogens. The carrier is 80·<100% petroleum distillate, and the SDS explicitly prescribes chemical-resistant gloves, an impervious apron, and a chemical respirator with organic vapor cartridge and full facepiece · a specific Section 8 instruction, not boilerplate. Use outdoors or with the garage door fully open. VOC is high (~476 g/L) and the mixture is toxic to aquatic life with long-lasting effects; the silicone film stays on the surface, but the carrier and propellant volatilize on application.
The Safety Data Sheet for Liquid Wrench Silicone Spray Lubricant (11 oz aerosol) carries a DANGER signal word, with classified hazards including H222 (extremely flammable aerosol); H315 (causes skin irritation); H320 (causes eye irritation). The Amazon listing also carries a California Prop 65 warning. See the PPE breakdown above for use-case-specific guidance translated from the SDS hazard codes.
CarCareTruth scores Liquid Wrench Silicone Spray Lubricant (11 oz aerosol) at 5.2 out of 10 on the composite CCT score, with a health sub-score of 1.0/10. The CCT score blends real-world effectiveness, ingredient health impact pulled from the manufacturer's safety sheet, and environmental footprint against a published category rubric. See the methodology link on this page for the full scoring breakdown.
Per the Safety Data Sheet ingredient disclosure: SDS §3 (Version 02, 2015-05-06): Stoddard Solvent (CAS 8052-41-3) 50·<60%; Distillates (petroleum), Hydrotreated Light (CAS 64742-47-8) 30·<40%; Distillates (petroleum), Hydrotreated Heavy Naphthenic (CAS 64742-52-5) 3·<5%; 1000 cSt Silicone (CAS 63148-62-9) 3·<5%; Ethylbenzene (CAS 100-41-4) 1·<3%; Trimethylbenzene (CAS 25551-13-7) 1·<3%; Cumene / Benzene,1-methylethyl- (CAS 98-82-8) <1%; Carbon Dioxide (CAS 124-38-9) 1·<3%. Combined petroleum distillate carrier 80·<100%.
Marketing copy from Liquid Wrench, via Amazon. Not editorial.
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