| Business | Phone |
| Cal'seal Northwest 10575 Sw Cascade Ave, Portland 97223 | (503) 968-8831 |
| Air-Oil Products Corp 14325 Ne Airport Way, Portland 97230 | (503) 234-0866 |
| Seal Source Inc 8914 Ne Alderwood Rd, Portland 97220 | (503) 281-0020 |
| Pacific Rubber & Packing Inc 11212 Nw Saint Helens Rd, Portland 97231 | (503) 253-3225 |