Glass Polishing Pads
Spartan Felt manufactures one of the widest ranges of glass polishing pads in the industry, spanning hardness levels from soft, delicate-material pads to the hardest crystal-polishing compounds. Each pad is engineered for a specific combination of material, pressure, and finish requirement — from art glass and polycarbonate through silicon wafers, sapphire, and hard crystal. Use the comparison below to narrow down the right starting point for your application, or contact our team with your material and process specs for a direct recommendation.
| Pad | Best For | Hardness | Compression | Key Trait |
|---|---|---|---|---|
| HPB35 | Art glass, soft scientific glass, polycarbonate | Shore C 35 | 5–7% | Softest pad in the line — gentlest option for delicate or soft-glass surfaces |
| HPB6040 | Hand-held machines, fragile and delicate items | Shore C 40 | 4–6% | Built for low-to-medium pressure, hand-held polishing applications |
| HPB-101CC | Glass, sapphire, silicon, silicon carbide, ceramics, optics, plastics, some metals | C Scale 40 ± 5 | 2–4% | Widest material compatibility of any pad in this category |
| HPC75 | Crystal, medium-hardness glass, quartz, stainless steel | Shore C 50 | 3–5% | Mid-hardness general-purpose pad for crystal and quartz work |
| HPC4545 | Silicon wafers, cadmium telluride, gallium arsenide, stainless steel | Shore C 55 | 3–5% | Tuned specifically for semi/compound semi material |
| Spar-Lon 2 | Glass, semiconductors, compound semiconductors, infra-red materials | C Scale 60 | 2% | Low compression for tight control on infra-red and compound semiconductor materials |
| AMS Polishing Pad | Silicon wafers, cadmium telluride, gallium arsenide, stainless steel, sapphire, silicon carbide | Shore C 60 | 4–6% | Broadest semi/compound semi coverage at this hardness level |
| HPC5080 | Hard glass and crystal | Shore C 85 | 1–3% | Hardest pad in the line — minimal deformation on the toughest glass materials |
| Spartan Omni-Gray | Silicon, sapphire, silicon carbide — 1st-step polishing | N/A | 10% | Designed as a first-step pad ahead of final polishing; plain, grooved, or embossed surface options |
| Spartan Durotex | Optics, electro-optics, semiconductor, aluminum discs, LCD/plasma display, ceramics | N/A | N/A | Built for single-step polishing across a wide variety of materials |
| Poretex 2LN | Ultra-polished final surface finishing | N/A (nap-based) | 4.5% ± 2.0 | The workhorse final-polishing pad — precut sheets or 53" rolls |
How to decide:
- Working with delicate or soft materials (art glass, polycarbonate, fragile items on hand-held equipment)? Start with HPB35 or HPB6040 — the softest pads in the line, built to avoid damaging sensitive surfaces.
- Polishing semiconductor substrates (silicon wafers, cadmium telluride, gallium arsenide)? HPC4545, AMS, or Spar-Lon 2 are purpose-built for these materials, with AMS covering the broadest range including sapphire and silicon carbide.
- Working with hard glass or crystal where you need minimal pad deformation? HPC5080 is the hardest pad Spartan makes, ideal for the toughest glass materials.
- Need a first-step pad before final polishing? Spartan Omni-Gray is designed specifically for that role on silicon, sapphire, and silicon carbide, with surface options (plain, grooved, embossed) to match your process.
- Want to polish in a single step across a wide range of materials rather than a multi-stage process? Spartan Durotex is built for that, spanning optics, semiconductor, aluminum discs, and LCD/plasma display substrates.
- Need the widest material compatibility in one pad? HPB-101CC covers glass, sapphire, silicon, silicon carbide, ceramics, optics, plastics, and some metals.
Not sure which pad fits your application? Contact our team with your material, target finish, and current process specs — we'll help you match the right pad or engineer a custom solution.
HPB35 POLISHING MATERIAL
FOR USE ON: Art Glass Polishing, Soft Scientific Glass Polishing and Polycarbonate Polishing DUROMETER: Shore C Scale 35 COMPRESSION %: 5-7% (4 pound force displacement) DENSITY: .35 g/cm3 THICKNESS: .125” and .275” DIAMETER: Up to 60” Sheets or Pads DESCRIPTION:...
