When you're building out your industrial PPE and workplace safety inventory, the first decision isn't always which respirator mask is better. Sometimes it's whether you need a complete full-face mask for one worker or a stock of genuine facelets to keep existing respirators in service. Two very different options sit on that spectrum: a New Old Stock Willson facelet lot and a new 3M 7800S-M medium respirator.
Quick Verdict
If you already have compatible Willson respirator bodies and need a supply of genuine facelets, the Willson lot is the practical lower-cost choice. If you need a ready-to-wear respirator mask with silicone construction, the 3M 7800S-M is the more direct solution.
Price and Condition Comparison
| Product | Price | Condition | Model / MPN | What's Included | Relative Price |
|---|---|---|---|---|---|
| Willson NOS Facelet Lot | $99.99 | New - Open box | Style No. 2 / 20-20931 | 5 original boxes, 12 facelets per style for multiple Willson respirators | |
| 3M 7800S-M | $234.88 | New | 1185K28EA / 7800S-M | Full-face mask, size medium, silicone |
Where Each Product Wins
- Bundle and price: The Willson facelet lot gives you more components for fewer dollars, with five original boxes and 12 facelets per style.
- Ready to use: The 3M is a complete mask, so it goes straight to a worker after fitting - no need to match it to a separate respirator body.
- Condition clarity: The Willson is open-box new old stock while the 3M is new in factory packaging. If sealed-condition matters, the 3M is the safer call.
- System compatibility: The Willson lot lists compatibility with a wide range of Willson respirator series. The 3M is a self-contained facepiece.
Product Notes
Willson NOS Facelet Lot (20-20931)
This is a rare find for anyone maintaining older Willson respirator systems. The lot includes five original Willson boxes and 12 facelets of each style, with part number 20-20931 listed for use across 1B, 2B, 5D, 6, 11B, 22B, 45D, 55, 400, and 750DC respirators. If you already own those respirator bodies, this lot gives you a practical restock supply. The trade-off? You're getting replacement facelets, not a complete respirator mask. If you don't already have compatible Willson bodies, this lot won't give you a ready-to-wear facepiece. It's a specialist's restock purchase, not a first-line mask for new workers.
3M Safety 7800S-M Medium Full Face Respirator
If you need one complete mask, the 3M 7800S-M is the more direct purchase. It's a new mask with a silicone facepiece that arrives in factory packaging, removing the guesswork of vintage surplus. No need to track down matching components - this is the mask itself. The limitation is the higher price compared with the Willson lot, and you get one facepiece rather than a bundle of facelets. This option is for someone who wants a complete system in a single purchase, not someone stocking spare parts for an existing fleet.
Final Choice by Use Case
- Restocking existing Willson respirators: Go with the Willson NOS Facelet Lot at $99.99.
- Issuing a complete new mask: Go with the 3M 7800S-M at $234.88.
The right choice depends on your starting point. If you already have the respirator bodies, the facelet lot keeps them working at a lower price. If you're outfitting a worker from scratch, the 3M gives you a complete mask without further assembly.
