Howard Leight SmartFit Metal Detectable Earplugs, Corded, NRR 25 (SDT-30, 100 Pairs)
$160.27
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EDITORIAL REVIEW: 4.6/5 WC Safety Review — the Howard Leight SmartFit Metal Detectable Earplugs (SDT-30) Editorial assessment by the WC Safety Editorial Team, based on published Howard Leight by Honeywell specific...
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EDITORIAL REVIEW: 4.6/5 WC Safety Review — the Howard Leight SmartFit Metal Detectable Earplugs (SDT-30)
Editorial assessment by the WC Safety Editorial Team, based on published Howard Leight by Honeywell specifications. We did not laboratory-test this product.
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Howard Leight SmartFit Metal Detectable Earplugs Overview
The Howard Leight SmartFit Metal Detectable Earplugs (model SDT-30) are corded, reusable, triple-flange earplugs with a Noise Reduction Rating of 25 dB, supplied 100 pairs to a box. A metal ring in the stem and the blue polycord make a dropped plug detectable and visible before it reaches product.
As the Howard Leight SDT-30, these SmartFit detectable earplugs are true metal detectable corded earplugs. Built as reusable detectable earplugs, they work as food-safe earplugs NRR 25 for lines that must catch a lost plug.
The heat-activated Conforming Material Technology softens with body heat to mold to the ear canal. Compare them with the Elvex EP-405 detectable earplug, see the field in best metal detectable ear plugs, and browse the range in metal detectable ear plugs.
Who These Earplugs Are For
| Use case | Fit | Buyer guidance |
|---|---|---|
| Food, beverage, or pharma lines | Purpose-built | Metal-detectable stem and blue cord. |
| Reuse over single-use | Strong | Washable; lasts about 2-4 weeks. |
| Mid-range noise | Strong | NRR 25 for typical plant noise. |
| Highest possible attenuation | Consider foam | Some foam plugs rate higher. |
| Single home user | Bulk pack | 100 pairs suits teams, not one user. |
Treat the NRR as a starting point, not a promise. The SDT-30's NRR of 25 dB is a laboratory rating, and real-world attenuation is typically lower because few workers get the perfect seal achieved in a test lab, so NIOSH recommends derating the number when you estimate on-the-job protection. The rated protection only happens with a correct seal, clean hands, and a plug that is not torn or hardened, so train workers to fit and check them. Where noise exposure reaches the OSHA action level, an earplug does not replace a hearing-conservation program with exposure monitoring, training, and audiometric testing under 29 CFR 1910.95. Learn the basics in what is NRR explained and OSHA 1910.95 hearing conservation.
Pros & Cons
Pros
- Metal-detectable stem for food and pharma lines
- High-visibility blue plug and polycord
- Heat-activated fit conforms to the ear canal
- Reusable and washable; NRR 25
- Bulk 100-pair box, individually packaged
Cons
- NRR 25 is lower than some foam plugs
- One-size only; not every ear seals
- Reusable life is only weeks, not months
- Bulk pack is overkill for a single user
How It Compares
The SDT-30 is a detectable reusable plug. Weigh it against nearby choices:
| Option | Type | NRR | Best for |
|---|---|---|---|
| Howard Leight SmartFit SDT-30 (this page) | Reusable, detectable, corded | 25 | Food/pharma contamination control |
| Elvex EP-405 detectable | Reusable, detectable, corded | Verify on listing | Alternate detectable plug |
| Howard Leight Laser Lite foam | Disposable foam | 32 | Higher attenuation, single-use |
Choose the SDT-30 where a lost plug must be detectable, the Elvex EP-405 as an alternate detectable plug, or a foam plug such as the Laser Lite (NRR 32) when you want higher attenuation. See disposable vs reusable, corded vs cordless, and foam vs reusable.
Specifications
| Brand | Howard Leight by Honeywell |
| Model | SmartFit SDT-30 (metal detectable, corded) |
| NRR | 25 dB (laboratory value; derate for real use) |
| Design | Reusable triple-flange TPE; heat-activated Conforming Material Technology |
| Detectability | Metal ring in stem; high-visibility blue plug and polycord |
| Pack | 100 pairs, individually packaged; one size |
Related Guides
best metal detectable ear plugs, what is NRR explained, disposable vs reusable ear plugs, corded vs cordless ear plugs, when do you need hearing protection, OSHA 1910.95 hearing conservation.
Related Resources
metal detectable ear plugs food-safe ear plugs reusable earplugs corded ear plugs NRR 25 ear plugs Howard Leight corded ear plugs
Frequently Asked Questions
What is the NRR of the Howard Leight SmartFit SDT-30?
The SDT-30 has a Noise Reduction Rating of 25 dB. That is the laboratory-tested value, and real-world protection is usually lower, so NIOSH suggests derating the NRR when you estimate protection for a noisy task.
What makes these earplugs metal detectable?
A metal ring in the earplug stem is picked up by automated metal detectors on a production line, and the bright blue color and blue polycord aid visual inspection. This helps a dropped plug get caught before it contaminates food, beverage, or pharmaceutical product.
What does 'heat-activated' mean here?
They use Conforming Material Technology: the material softens with body heat once in the ear and molds to the shape of your ear canal for a personalized fit. This is different from a foam plug you roll down before inserting.
Are they reusable, and how long do they last?
Yes. Wash them with mild soap and warm water, pat dry, and store them between uses. With proper care a pair typically lasts about 2 to 4 weeks. Replace them sooner if the flanges tear, harden, or stop sealing.
How many are in a box?
This is a bulk box of 100 pairs, individually packaged for hygiene. That format suits a shared dispenser or a large team on a food or pharma line rather than a single user.
Why are they corded?
The blue polycord lets the plugs drape around the neck when not in use, which helps prevent loss and keeps a removed plug out of the product stream. The cord is also part of the detectable, high-visibility design.
Are these good for very high noise?
NRR 25 is solid mid-range protection. For very high noise you may need a higher-rated plug or to combine plugs with earmuffs, but dual protection does not simply add the two ratings. Base the choice on your measured noise levels.
Do I still need a hearing program if I use these?
Yes. Where noise exposure reaches OSHA action levels, the employer must run a hearing-conservation program with exposure monitoring, training, and audiometric testing. The right earplug is one part of that program, not a replacement for it.
Are they suitable for food processing?
That is their main purpose. The metal-detectable stem and high-visibility blue design are built for food, beverage, and pharmaceutical environments where a dropped plug must be detectable. Confirm they fit your facility's detection and HACCP requirements.
What size are they?
The SmartFit detectable is a one-size triple-flange plug, and the heat-activated material adapts to different ear canals. If a worker cannot get a comfortable seal, try a foam or a differently shaped plug and confirm the fit.
How do I insert them correctly?
With clean hands, reach over your head, pull the ear up and out, and insert the plug with a gentle push and twist until it seals. A good seal is what delivers the rated protection, so check it and re-seat if sound leaks in.
How are these different from disposable foam plugs?
Foam plugs are single-use, roll-down, and often carry a higher NRR, while the SmartFit detectable is reusable, wipe-clean, metal-detectable, and heat-conforming. Choose detectable reusable plugs where contamination control and reuse matter more than the highest possible rating.
Written by Steven Eaton, WC Safety Editorial. Specifications sourced from Howard Leight by Honeywell published data. Compare the range in metal detectable ear plugs.
WC Safety is an independent PPE retailer and Amazon Associate; no paid placement. Noise Reduction Ratings are laboratory values; estimate real protection with NIOSH derating and a hearing-conservation program.
Brand / Vendor
Howard Leight by Honeywell
Model / SKU
SDT-30
Product Type
Ear Plugs
Price
$160.27 (Amazon)
Availability
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