Siffar rigar layin silinda shine cewa samansa yana cikin hulɗa kai tsaye tare da mai sanyaya. Bugu da ƙari, yana da kauri fiye da busassun silinda. Matsayin radial na rigar silinda gabaɗaya ya dogara ne akan babba da ƙananan belun belun hannu guda biyu masu fitowa tare da daidaitawa tsakanin shingen Silinda, kuma matsayi na axial yana amfani da ƙananan jirgin sama na flange na sama.

An rufe ƙananan ɓangaren silinda ta hanyar 1-3 mai jure zafi da zoben rufewa na roba. Akwai nau'ikan hatimi guda biyu: hatimin haɓakawa da hatimin matsawa.

Tare da haɓaka injunan dizal, cavitation na rigar layin silinda ya zama babbar matsala. Saboda haka, wasu injinan silinda na dizal suna da zoben rufewa guda uku. Babban ɓangaren ɓangaren silinda yana cikin hulɗa tare da mai sanyaya, wanda zai iya hana saman mating daga tsatsa. Yana da sauƙin tarwatsawa da tarawa, kuma yana iya ɗaukar rawar jiki da rage cavitation. Wasu tashoshi na sama da na tsakiya ana yin su ne da robar roba na ethylene-propylene don rufe mai sanyaya; na ƙasa an yi shi da kayan silicone don rufe man injin. Ba za a iya shigar da su biyu ba daidai ba. Wasu kuma suna shigar da zoben rufewa a kan silinda don haɓaka ƙaƙƙarfan layin silinda. Babban ɓangaren silinda na silinda yawanci ana rufe shi da takardar ƙarfe (tagulla ko gas na aluminium, gas ɗin aluminum don shingen gami da silinda na silinda, gas ɗin jan ƙarfe don hana lalata electrochemical) akan ƙaramin jirgin saman flange.

Amfanin jigon silinda mai ɗorewa shine cewa shingen silinda ya fi sauƙi don jefawa, sauƙi don gyarawa da maye gurbin, kuma yana da tasiri mai kyau na zafi. Rashin hasara shi ne cewa rigidity na Silinda ba shi da kyau, yana da sauƙi don samar da cavitation, kuma yana da sauƙin zubar da ruwa. Ana amfani da shi ne don injunan kaya masu nauyi (kusan duk injunan dizal da bore sama da 140mm ana amfani da su) da injunan silinda na aluminum gami.