How to Install Replacement Bayonet Plastic Temple Tips on American Optical Sunglasses
Scan the QR code below to watch a short video on installing American Optical soft rubber ear tips.

Bayonet temple tips are the straight, low-profile temple ends commonly found on American Optical sunglasses, especially military-style and aviator frames. Unlike curved temples, bayonet temples slide easily under headgear, helmets, or earmuffs—making comfort and proper grip essential.
Over time, these plastic tips can crack or split, become slippery, harden and cause pressure points or fall off entirely. Replacing them brings your sunglasses back to life.
What You’ll Need
- Replacement bayonet plastic earpiece ends (you can buy them by clicking here)
- A mug or bowl of hot (not boiling) water
- Towel or cloth
- Optional: needle-nose pliers (used carefully)
Avoid open flames or boiling water—excessive heat can damage the frame or weaken the metal temples.
Step 1: Remove the Old Temple Tips
- Heat the old tips
Place the temple ends into hot water for 30–60 seconds. This softens the plastic and loosens its grip on the metal. - Grip and pull
Using a towel for traction, firmly twist and pull the temple tip straight off the metal bayonet arm. - Stubborn tips?
If the tip won’t budge: - Reheat for another 30 seconds
- Gently use pliers over a cloth to avoid scratching the metal
- Pull slowly—do not bend the temple
Once removed, dry the metal temples completely.
Step 2: Install the New Bayonet Temple Tips
- Heat the new tips
Submerge the replacement temple tips in hot water for 30–45 seconds until pliable. - Align the opening
Make sure the internal channel of the tip lines up straight with the metal bayonet temple. - Push into place
Firmly slide the new temple tip onto the metal arm until it is fully seated and snug. - Set the fit
Hold the sunglasses in place for a few seconds as the plastic cools and tightens.
Step 3: Final Fit Check
- Confirm both temple tips are seated evenly
- Put the sunglasses on and check comfort behind the ears
- Make sure there’s no slipping or pressure
That’s it—your American Optical sunglasses should now feel secure and comfortable again.
Common Mistakes to Avoid
- ❌ Using boiling water (can warp plastic)
- ❌ Pulling without heating first
- ❌ Bending the bayonet temples during removal
- ❌ Installing tips that are the wrong size or style
If the tips feel loose after cooling, reheat and push them on slightly farther.
Replacing temple tips is far cheaper than replacing the entire frame—and often makes old sunglasses feel brand new.
Installing replacement earpiece covers American Optical sunglasses is an easy, at-home repair that improves comfort, stability, and longevity.