The 688658 is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 AND STEEL COMP 1030 INNER RING, case_style: SQUARE, seal_width: 0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN, special_features: USED ON AIRCRAFT HYDRAULIC SYSTEMS AND COMPONENTS, surface_treatment: CADMIUM OVERALL, housing_bore_diameter: 0.812 INCHES NOMINAL IN. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-00-991-9984, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| material | STEEL COMP 1020 AND STEEL COMP 1030 INNER RING |
| case_style | SQUARE |
| seal_width | 0.067 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| special_features | USED ON AIRCRAFT HYDRAULIC SYSTEMS AND COMPONENTS |
| surface_treatment | CADMIUM OVERALL |
| housing_bore_diameter | 0.812 INCHES NOMINAL IN |
| sealing_element_style | VERTICAL |
| accommodated_shaft_diameter | 0.490 INCHES NOMINAL IN |
| material_document_and_classification | V1854-75 MFR REF SINGLE MATERIAL RESPONSE SEALING ELEMENT |
| surface_treatment_document_and_classification | QQ-P-416 CLASS II,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| NSN | 5998-00-991-9984 |
| OVERALL HEIGHT | 0.750 INCHES NOMINAL IN |
| OVERALL WIDTH | 7.500 INCHES NOMINAL IN |
| FEATURES PROVIDED | ELECTROSTATIC SENSITIVE |
| SPECIAL FEATURES | CAP 4,INTEGRATED CIRCUIT 44,PWB 1;CONTACT PIN MOUNTED |
| END ITEM IDENTIFICATION | TRAINING AIDS AND DEVICES |
| CRITICALITY CODE JUSTIFICATION | CBBL |
| OVERALL LENGTH | 10.380 INCHES NOMINAL IN |
| OVERALL HEIGHT | 0.750 INCHES NOMINAL IN |
| OVERALL WIDTH | 7.500 INCHES NOMINAL IN |
| FEATURES PROVIDED | ELECTROSTATIC SENSITIVE |