Alpha Resources O-Ring is an aftermarket replacement O-ring seal for LECO elemental and combustion analyzers. It cross-references LECO part 771-991 and provides a gas-tight, leak-free seal in the analyzer's gas, combustion, or vacuum path — preventing the leaks that cause baseline drift, poor recoveries, and downtime.
Replace worn or hardened O-rings during routine maintenance to keep results accurate. Supplied by Alpha Resources as an aftermarket laboratory consumable.
Specifications
| Alpha Part Number | AR991 |
| Unit of Measure | EA |
| Commodity / HS Code | 4016.93.0000 |
OEM Cross-Reference
| OEM Brand | OEM Part Number(s) |
|---|---|
| LECO® | 771-991 |
| Crossings | ci14991 |
OEM part numbers are provided for cross-reference convenience only and do not imply the product is of OEM origin. All trademarks are the property of their respective owners.
Same series
Other LECO O-rings we stock: AR417 (LECO 762-060), AR357 (LECO 762-357), AR3379 (LECO 763-379), AR5976 (LECO 765-976), AR6557 (LECO 766-557), AR944 (LECO 768-944), AR9310 (LECO 769-310), AR3913 (LECO 771-040), AR1043 (LECO 771-043), AR1362 (LECO 771-362), AR407 (LECO 771-407), AR429 (LECO 771-446), AR269 (LECO 772-269), AR520 (LECO 772-520), AR738 (LECO 772-738), AR2910 (LECO 772-910), AR320 (LECO 773-141), AR4211 (LECO 774-211), AR4253 (LECO 774-253), AR4283 (LECO 774-283), AR432 (LECO 774-425), AR489 (LECO 774-489), AR4613 (LECO 774-613), AR5306 (LECO 775-306).
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