Nylon 6/6—These abrasion-resistant spacers stand up to daily wear and tear. Nylon will swell and weaken when exposed to moisture, so these spacers are best for dry environments.

Moisture-Resistant Acetal—The best plastic for damp and wet environments, these spacers won't swell or lose their strength if exposed to moisture.

LDPE—The most flexible spacers we offer, these bend without breaking and resist cracking from sudden impacts. They’re also virtually nonabsorbent, so they maintain their shape in wet environments.

HDPE—Harder and more chemical resistant than LDPE, these spacers hold up to strong acids, bases, and solvents without swelling or losing strength. They’re virtually nonabsorbent and scratch-resistant, but may crack if struck suddenly.

Chemical-Resistant Polypropylene—These spacers resist a broad range of chemicals, such as petroleum, degreasers, and sulfuric acid. They will weaken, however, if exposed to chlorine, lacquer solvents, or nitric acid.

Ultra-Chemical-Resistant High-Temperature PTFE—The most chemical-resistant plastic spacers we offer, these stand up to the widest range of harsh acids, bases, solvents, and corrosive cleaners. They also keep their shape and strength at higher temperatures than most plastics.

High-Temperature High-Strength PEEK—These are our strongest plastic spacers. They also won't degrade when exposed to high heat, so they're a good choice for transmission systems and electric battery packs. They aren't very impact resistant, however, and may crack or dent if subjected to hard bumps and vibrations.

Clear Impact-Resistant Polycarbonate—Our most impact-resistant plastic spacers, these withstand bumps and vibration without cracking or denting. They’re also clear, so they’re less noticeable in your assembly.

Military Specification—These spacers are manufactured and tested to meet strict U.S. military standards for material and construction.