Olympus 35DC Light Seal Kit

You could install them as above video.

The price is $7.00 US, includes 3 kits in 1 set.
This kit fits to Olympus 35DC.

Shipping fee

Asia : $5.50 US (registered airmail)
Europe Oceania Middle East : $6.30 US (registered airmail)
USA : $7.20 US (registered airmail)
South America & Africa : $6.50 US (registered airmail)