wwaterjet 
O-ring 500-5-0111
The O-ring 500-5-0111 is a genuine sealing element designed for TECHNI waterjet pump assemblies. Situated between mating components—such as the sealing head, valve seat, or other pressure-bearing surfaces—this O-ring prevents water or hydraulic fluid from leaking under high pressure. Made from a durable elastomer material suited to resist wear, pressure fluctuations, and exposure to water/abrasives, it plays a small but crucial role in maintaining operational reliability. A properly fitting 500-5-0111 O-ring ensures pressure integrity, reduces downtime from leaks, and helps preserve the life of adjoining parts by minimizing fluid contamination and mechanical wear.
ITEM NO. | Description | Part Number | Quantity |
1 | Clamp ring | SP4-50 | 1 |
2 | M12x1.25x40 SHCS BLK | 110-1-1240 | 12 |
3 | Plunger | SP-46-3 | 1 |
4 | Internal Circlip | 501-1-0010 | 1 |
5 | O-ring | 500-5-0049 | 2 |
6 | O-ring | 500-5-0089 | 1 |
7 | Seal Housing | SP4-45-175 | 1 |
8 | Wiper Seal | SP1042 | 2 |
9 | Guide Bush | SP4-46-175 | 1 |
10 | M6 x 10 SHCS Black | 108-1-0610 | 1 |
11 | HP Seal Kit | SP1060 | 1 |
12 | Cylinder Liner | SP4-69-175 | 1 |
13 | Cylinder Body | SP-49-13 | 1 |
14 | Check Valve Housing | SP-72-7 | 1 |
15 | LP Check Valve Spring | 500-12-0040 | 1 |
16 | Check Valve Poppet | SP-73-2 | 1 |
17 | Sealing Head | SP-71-9 | 1 |
18 | O-Ring- BS033 | 500-5-0042 | 2 |
19 | Cylinder Retaining Sleeve | SP2-70-5 | 1 |
20 | Valve Seat | 500-20-0111 | 1 |
21 | Outlet Poppet | 500-20-0113 | 1 |
22 | Spring | 500-20-0112 | 1 |
23 | Check valve outer body | 500-20-0100 | 1 |
24 | O-ring | 500-5-0111 | 1 |
25 | End Cap Insert | SP4-125 | 1 |
26 | Clamp | SP4-126 | 3 |
27 | M6 x 12 SHCS Black | 108-1-0612 | 3 |
NA | Collar | 10078715 | 1 |
NA | Gland nut 3/8" | 10078129 | 1 |
High Pressure Outlet Poppet Repair Kit | 500-20-0110 | ||
20 | Valve Seat | 500-20-0111 | 1 |
21 | Outlet poppet | 500-20-0113 | 1 |
22 | Spring | 500-20-0112 | 1 |
Guide Bush Assembly Kit G4 | SP1120 | ||
5 | O-ring | 500-5-0049 | 2 |
6 | O-ring | 500-5-0089 | 1 |
7 | Seal Housing | SP4-45-175 | 1 |
8 | Wiper Seal | SP1042 | 2 |
9 | Guide Bush | SP4-46-175 | 1 |
