The 3M S-433L-5 is a lightweight Versaflo S-Series respirator hood with a built-in (integrated) head suspension, so it arrives fully assembled and ready to use straight out of the box. Worn as the headtop of a 3M powered air (PAPR) or supplied air (SAR) respirator system, it provides head, face, neck, and shoulder coverage against contaminants such as dust and paint spray, and helps shield the eyes and face from liquid splash and low-energy flying particles. It has a clear visor for good field of view and is recommended for jobs like assembly and mechanical work, cleaning, and painting in general manufacturing and transportation.

3M lists an Assigned Protection Factor (APF) of 1000 for the S-433L-5 Versaflo hood. That means, when used as the headtop of a complete, compatible 3M Versaflo PAPR or supplied air respirator system, the assembled respirator is rated to reduce a wearer's exposure to airborne contaminants by a factor of about 1000. The APF applies to the whole approved system — the hood must be paired with a compatible 3M blower/regulator and breathing tube, not worn on its own.

The S-433L-5 is designed to work with certain 3M Versaflo Powered Air Purifying Respirator (PAPR) and 3M Supplied Air Respirator (SAR) systems — it is a hood (headtop), not a standalone respirator, so it cannot be used by itself. It connects to a compatible 3M breathing tube using the 3M Quick Release Swivel (QRS) connection. To build a complete respirator, pair the hood with a compatible 3M PAPR blower or supplied-air regulator and breathing tube; always confirm the exact system compatibility with 3M's selection guidance.

The 3M Quick Release Swivel (QRS) is the connection point that links the S-433L-5 hood to a compatible 3M Versaflo breathing tube. It lets the wearer quickly attach or release the breathing tube and swivel it, so the air-supply hose can move with the worker without twisting or binding. This makes donning, doffing, and moving around the job easier while keeping a secure air path from the PAPR or supplied-air source to the hood.

No. The S-433L-5 is not flame resistant (ASTM D2859-96: No) and is not rated for high heat, and it is not fluid resistant (ASTM F1862: No). It is a polypropylene non-woven hood intended for tasks like assembly and mechanical work, cleaning, and painting — protecting against dust, paint spray, and low-energy particles. For welding, high-heat, or heavy liquid-splash exposures, choose a 3M Versaflo headtop specifically rated for those hazards instead.

No. The "integrated head suspension" on the S-433L-5 is a comfort suspension that holds the hood securely and comfortably on the head — it is not impact (bump/hard hat) protection. 3M offers head impact protection only as an accessory option on its premium Versaflo hoods, not on this integrated model. If your task requires head impact protection, select a premium Versaflo hood that supports the impact-protection accessory, or wear separately rated head protection where compatible.

The S-433L-5 is a Medium/Large hood, and the Versaflo integrated-suspension hood is offered in two sizes to suit different wearers. It is lightweight — about 137 grams (roughly 4.8 oz) per hood — and comes fully assembled with the head suspension already built in, so it's ready to wear right out of the box with no assembly needed. The one-piece design and clear visor are made for comfort and a good field of view over a full shift.

Both. The S-433L-5 is available as a single hood (sold by the each) and as a 5 EA/Case pack, so you can order one for a replacement or buy the case to stock a crew. Both options are available at Industrial Safety Products (industrialsafetyproducts.com) with free shipping. Choose the single unit for spares or the 5-pack case for teams and higher-use environments.

It depends on whether you value convenience or long-term cost savings. The S-433L-5 has the suspension integrated into the hood, so it's fully assembled and ready to use out of the box — the simplest option and great when you want a grab-and-go headtop. A reusable-suspension design instead lets you keep the suspension and replace only the disposable hood cover, which can save money over time in high-turnover use. Both are part of the 3M Versaflo S-Series; pick integrated for convenience or reusable-suspension for lower per-hood replacement cost.