Refers to a personal or official seal used for stamping documents, similar to 印鑑 (いんかん) but slightly more colloquial or old-fashioned.
Please stamp the contract with your seal.
This seal is registered at the bank.
Standard kanji spelling.
Compound of 印 (いん, 'mark' or 'seal') and 判 (ばん, 'seal' or 'judgment'). The reading いんばん is standard; いんぱん is a rare variant.