| Class Number |
Class Name |
Patents |
| 277/300 |
Process of dynamic sealing |
32 |
| 277/312 |
Process of static sealing |
90 |
| 277/317 |
Seal combined with indicator, sampler, or inspection feature |
80 |
| 277/322 |
Seal for well apparatus |
110 |
| 277/345 |
Seal between relatively movable parts (i.e., dynamic seal) |
237 |
| 277/590 |
Seal between fixed parts or static contact against relatively movable parts |
94 |
| 277/902 |
Seal for sterling engine |
40 |
| 277/903 |
Seal for rotating kiln or drum |
60 |
| 277/904 |
Viscous seal |
40 |
| 277/905 |
T-shaped or i-shaped ring member including seal on a side |
19 |
| 277/906 |
Seal for article of indefinite length (e.g., strip, sheet, etc.) |
79 |
| 277/907 |
Passageway in rod or shaft |
56 |
| 277/908 |
Seal for use in rotating and reciprocating arrangement |
26 |
| 277/909 |
Similar sealing structures for mounting on piston and about rod |
22 |
| 277/910 |
O-ring seal |
422 |
| 277/911 |
Seal combined with nominal motion transmitting device |
21 |
| 277/913 |
Seal for fluid pressure below atmospheric (e.g., vacuum, etc.) |
89 |
| 277/914 |
Backup seal for failure of primary seal |
55 |
| 277/915 |
Seal including compression set feature |
10 |
| 277/916 |
Seal including vibration dampening feature |
76 |
| 277/917 |
Seal including frangible feature |
61 |
| 277/918 |
Seal combined with filter or fluid separator |
91 |
| 277/919 |
Seal including electrical feature |
92 |
| 277/920 |
Seal including electromagnetic shielding feature |
104 |
| 277/921 |
Closure or weather strip seal |
203 |
| 277/922 |
Bonding or joining for manufacture of seal |
117 |
| 277/924 |
Deformation, material removal, or molding for manufacture of seal |
171 |
| 277/925 |
Snap fit feature for mounting or assembly of seal |
50 |
| 277/926 |
Seal including fluid pressure equalizing or balancing feature |
68 |
| 277/927 |
Seal including fluid pressure differential feature |
85 |
| 277/928 |
Seal including pressure relief or vent feature |
153 |
| 277/929 |
Seal feature where change in operation or condition induces additional leakage control |
47 |
| 277/930 |
Seal including heating or cooling feature |
204 |
| 277/931 |
Seal including temperature responsive feature |
91 |
| 277/934 |
Seal swells when wet |
26 |
| 277/935 |
Seal made of a particular material |
33 |
