self-sealadj.
/ˌsɛlfˈsiːl/, U.S. /ˌsɛlfˈsi(ə)l/ 1. That seals itself or that may be sealed without the use of a separate sealing agent, mechanism, etc.; spec. (of a fuel tank, pneumatic tyre, etc.) able to seal small punctures automatically.
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1857 Daily Chron. & Sentinel (Augusta, Georgia) 15 Sept. (advt.) Arthur's self-seal cans and jars.
1920 Washington Post 12 Sept. 9/6 The famous Kerr Economy and Self Seal Preserving Jars.
1941 Austin (Texas) Statesman 10 Feb. 7/1 New model ‘Flying Fort’..features self-seal tanks and armor plate.
1955 Winnipeg Free Press 8 Sept. 35/5 (advt.) 1953 Plymouth Suburban.., underseat heater, tubeless self seal tires.
1984 E. Pye in J. M. A. Thompson Man. Curatorship 208/1 Polythene boxes with self-seal lids (various sizes).., polythene bags (self-sealing).
2003 B. Bowling Compl. Wheel & Tire Buyer's Guide i. iii. 48 During..testing, each of the self-seal tires was punctured a total of 33 times—with no quantifiable loss of air pressure.
2. Of an envelope or its flap: that does not require moistening in order to stick when closed.
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1935 Times 25 May 19/6 ‘Self seal’ envelopes... Envelopes which can be sealed by mere pressure of the hand without any application of moisture..are styled ‘Self Seal’.
1967 Financial Times 10 July 17/6 (advt.) Robust manilla pockets with self-seal flaps.
1998 Direct Apr. 72/4 (advt.) We produce both tuck flap and self-seal mailers.
2009 Printweek 17 July 36 It seems that the only FSC envelopes are self-seal or peel 'n' seal.
This entry has been updated (OED Third Edition, January 2018; most recently modified version published online March 2022).
self-sealv.
/ˌsɛlfˈsiːl/, U.S. /ˌsɛlfˈsi(ə)l/ intransitive. To seal automatically or without the use of a separate sealing agent, mechanism, component, etc. Also transitive (esp. of a pneumatic tyre) to seal (a small puncture) automatically.
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1894 Gleanings Bee Culture 1 July 560/2 To hold a pound of honey, and self-seal, there is nothing..so good as the No. 25 jar..with glass cover and rubber ring, secured by a nickel plated rim which screws on securely.
1928 El Paso (Texas) Herald 10 Oct. 8/5 (advt.) Polson Super Tubes will eliminate 95% of your flat tires by their ability to self seal small punctures.
1935 Austin (Texas) Statesman 6 June 7/6 (advt.) No more ‘flats’! New kind of tube self-seals punctures..instantly.
1953 Sun-Herald (Sydney) 25 Apr. 19/3 The 23mm and 37mm cannon shells fired by MIGs rip such large holes in the self-sealing rubberised material that it will not self-seal.
1996 M. Dove How to win any Consumer Competition 64 I always use a Long White Envelope..that self seals.
This entry has been updated (OED Third Edition, January 2018; most recently modified version published online March 2022).
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adj.1857v.1894