Description
Howard Leight SmartFit SDT-30 is a tapered TPE ear plug, corded, metal detectable. NRR 25 dB, SNR 30 dB. Box of 100. Vinyl/Steel cord. Sold by the case of 500 pairs. Ships in 1–2 business days; most orders arrive in 3–7 business days.
Howard Leight SDT-30 specifications
| Item | PIP data |
|---|---|
| Part number | SDT-30 |
| Series | SmartFit |
| PIP description | Metal Detectable Reusable TPE Corded Ear Plugs - NRR 25 |
| Type | Corded earplug; Metal detectable |
| NRR | 25 |
| SNR | 30 |
| Hearing Protection Style | Metal Detectable |
| Material | TPE |
| Plug Material | Thermoplastic Elastomer |
| Shape | Tapered |
| Cord | Vinyl/Steel |
| Box Count | 100 |
| Color | Blue |
| Packaging | Bulk Boxed |
| Case pack | 500 each |
| Country of origin | Mexico |
Source: PIP Rich Product Data, October 2026; PIP specification sheet SDT-30; Nov 1 2026 PIP price list.
Ratings and standards
| Standard | Rating as published by PIP |
|---|---|
| NRR (EPA label, ANSI S3.19-1974) | 25 dB noise reduction rating as published by PIP; the label value is a laboratory figure and the protection in use depends on fit |
| SNR (EN 352) | 30 dB single number rating |
| CSA Z94.2 hearing protection devices | Class AL |
| TAA (Trade Agreements Act) | Meets the Trade Agreements Act, as PIP lists it |
Source: PIP Rich Product Data, October 2026; PIP, "Ear Muffs" brochure (May 2023, page 1: What is NRR?); Howard Leight, "Hearing Conservation Guide" (2025, pages 4–8). Ratings are as published by the manufacturer or the named standard, not a recommendation for any task.
Features
- Perfect for use in food industry
- Metal infused ear plug and cord for better detectability
- Avoid minor injuries and irritation with a smooth, dirt-repellent surface
- Pre-formed plug shape with no rolling required makes insertion simple
- Self-sealing fflanges give all day comfort
- Rigid stem makes insertion easy and reduces the risk of contamination
- Corded versions use a non-resonating vinyl cord for comfort and easy storage
- TPR plug is to be cleaned using soap and water
- Can be reused several times, making them very cost efficient
- Moderate attenuation allows for safe usage that blocks out hazardous noise yet allows warning signals and voices to be clearly understood
Source: PIP Rich Product Data, October 2026, PIP feature list for style SDT-30, verbatim.
Howard Leight SDT-30 questions
What is the SDT-30 made of? Thermoplastic Elastomer, tapered shape, as PIP lists it.
What is the NRR of the SDT-30? NRR 25 dB (EPA label, ANSI S3.19-1974), as PIP publishes it; SNR 30 dB under EN 352.
Is the SDT-30 corded? Corded earplug; Metal detectable, Vinyl/Steel cord, as PIP lists it.
Where is the SDT-30 made? Mexico, as PIP lists the country of origin.
How many pairs come in a box? 100 pairs to the box; 500 each to a case, as PIP packs it.
Is the SDT-30 metal detectable? Yes, as PIP lists it.
Guides: what NRR means · how to insert ear plugs · reusable vs disposable · when hearing protection is required · NRR vs SNR · Howard Leight ear plugs compared · every ear plug and ear muff by NRR.
Manufacturer item number: SDT-30. Spec sheet: PIP specification sheet (PDF).
