CRC Heavy Duty Silicone Lubricant (11 oz aerosol)
Priced as of May 16, 2026
4.7(4,338 ratings)Buy on AmazonSaved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
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Prices may varyFrom the Safety Data Sheet
Full SDS ↗ (rev. 2024-01-13)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.
EyesRecommendedMfr. SDS §8 · 29 CFR 1910.133(a)(1) · GHS H319SkinRequiredMfr. SDS §8 · 29 CFR 1910.138(a) · GHS H315LungsSituationalMfr. SDS §8 · 29 CFR 1910.1200(f) · GHS H304Ventilation—No PPE in published sourcesShow details for all categories ▾Hide details ▴
From the manufacturer’s Safety Data Sheet, Section 8
“Eye irritation is present from the carrier chemistry. SDS §8 specifies safety glasses with side shields or chemical goggles. The DANGER signal word is driven by an ingestion/aspiration pathway (H304), not an eye hazard — eyes tier is recommended based on the irritation classification, not the signal word.”
— CRC
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses 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
“The DANGER signal word is driven by a health-tier H-code (H304 aspiration hazard Cat 1), and skin irritation (H315) is present. Skin protection is required per the rubric escalation rule for DANGER from health H-codes. SDS §8 specifies chemical-resistant gloves for handling.”
— CRC
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
“Aerosol format with petroleum-naphtha carrier. No respiratory irritation H-code (H335) is present — the drowsiness/dizziness classification (H336) does not escalate lungs to recommended per the silicone-spray rubric. For brief outdoor application or with car door open, no respiratory protection is needed. In an enclosed garage with the door shut, use with ventilation or respiratory protection.”
— CRC
U.S. regulatory standard
29 CFR 1910.1200(f); 1910.132(d)
“The employer shall assess the workplace to determine if hazards are present, or are likely to be present, which necessitate the use of personal protective equipment.”
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.
CarCareTruth's Analysis
Last reviewed May 16, 2026
TL;DR CRC #05174 is the top-selling aerosol silicone lubricant on Amazon — it reliably silences squeaky door seals and sticky window tracks on first application. DANGER-labeled: the petroleum-naphtha carrier requires wearing nitrile gloves. Keep it entirely off painted surfaces — silicone contamination prevents paint and primer from bonding.
What it is and how it performs
CRC #05174 is an aerosol silicone lubricant with a directional straw for rubber and plastic maintenance — door seals, weatherstripping, window tracks, sunroof seals, and hinge pivots. Attach the straw and apply a brief burst; the carrier evaporates and leaves a silicone film. The 4.7-star rating across 4,300+ Amazon reviews reflects consistent performance on the core job. Community durability is 4–8 weeks on outdoor-exposed seals. Keep it off painted panels and any surface where paint or adhesive bonding is planned — silicone residue prevents primer and paint from adhering.
Who should buy this — and who should skip it
Best for car owners with squeaky door seals, sticky window channels, or stiff weatherstripping. Skip it for metal-on-metal applications (hinges under load, fasteners, chains) — use white lithium grease instead. Never apply near brake components.
Safety and environmental impact
DANGER signal word from the petroleum-naphtha carrier's aspiration hazard — swallowing risk, not an inhalation hazard in normal use. Skin and eye irritation classifications are also present. Wear nitrile gloves and safety glasses. Use outdoors or with ventilation in enclosed garages. Carries a California Prop 65 warning for cancer and reproductive harm from trace petroleum impurities. CARB-compliant. Aquatic toxicity classified — keep away from drains.
Frequently asked questions
Is CRC Heavy Duty Silicone Lubricant safe for rubber seals and weatherstripping?▾
Safe for brief and normal-use contact with EPDM and neoprene rubber seals — no documented rubber degradation in community reviews. However, the formula uses a petroleum-naphtha carrier, not a pure silicone-oil base, so surface_safety is scored conservatively (6/10). Prolonged or soaking contact with rubber is not the intended use and is not recommended. For a pure silicone-oil formula with no petroleum carrier, look for products whose SDS Section 3 shows only PDMS and propellant.
Why does this silicone lubricant have a DANGER signal word if it's just a lubricant?▾
The DANGER label is driven by the aspiration hazard classification (the spray may be fatal if swallowed and enters the airways) — an ingestion pathway, not a inhalation hazard in normal use. Extreme flammability (H222) also contributes. The carrier is petroleum-naphtha, which carries this classification. For a home detailer applying the spray to door seals or window tracks, the practical risk is: don't ingest it, keep it away from ignition sources, and wear gloves.
Does CRC #05174 have a California Proposition 65 warning?▾
Yes. The product carries the California Proposition 65 warning for Cancer and Reproductive Harm. SDS §15 (2024 revision) lists trace impurities in the petroleum-naphtha fraction including benzene, ethylbenzene, naphthalene, acetaldehyde, cumene, and toluene — present at concentrations below ingredient-disclosure thresholds in the formulated product but at levels that trigger the mandatory Prop 65 label. This is common for petroleum-carrier aerosol products.
Can I use CRC silicone spray on painted surfaces?▾
No. Keep silicone spray off all painted surfaces, primer, or any area that may need touch-up paint or body panel adhesive bonding. Silicone residue is very difficult to fully degrease and prevents paint and primer from adhering — a known issue in body shop work. Apply only to rubber seals, plastic trim, weatherstripping, window tracks, and hinge pivot points.
Is CRC #05174 CARB-compliant?▾
Yes. SDS §15 (2024) states 'This product is regulated as a Silicone Based Multi-Purpose Lubricant. This product is compliant for use in all 50 states.' The CARB compliance reflects VOC accounting under that product category's regulatory limits. Absolute VOC emissions (estimated ~411 g/L) remain in the high-VOC bracket — the product is compliant, but aerosol VOC is still substantial.
From the manufacturer
Marketing copy from CRC, via Amazon. Not editorial.
- •Leaves no residue
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Manufacturer specifications
- Material
- Silicone
- Brand
- CRC
- Package Information
- Can
- Liquid Volume
- 11 Fluid Ounces
- Item Weight
- 11 Ounces
- Brand Name
- CRC
- Recommended Uses For Product
- Paint
- Specific Uses For Product
- Preventing sticking and binding on various surfaces in challenging conditions
- Item Form
- Gel
- Global Trade Identification Number
- 00078254051741
- Manufacturer
- CRC
- Unit Count
- 11.0 Ounce
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